Games like 39 Days to Mars on Steam

For those who prefer not to search, lists of the most played, top deals and best free games like 39 Days to Mars are available at the bottom of the page.

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Escape Simulator

First-person puzzler you can play solo or in an online co-op. Explore a set of highly interactive escape rooms. Move furniture, pick up and examine everything, smash pots and break locks! Play thousands of community-made rooms through the level editor.

Similarity 56%
Price -40% 10.19€
Rating 9.2
Release 19 Oct 2021

River City Girls

There's trouble once again in River City, and this time only the girls can save the day! Using a variety of attacks, weapons, and items, these hot-blooded heroines are ready to teach the city’s lowlifes a lesson - either solo or in 2-player co-op! It’s an old-school rumble for a new generation!

Similarity 56%
Price -74% 6.53€
Rating 8.1
Release 05 Sep 2019

Aegis Defenders

Take on wild beasts, ruthless soldiers, and ancient gods in this 2D Action-Platformer inspired by Tower-Defense combat.

Similarity 56%
Price 19.99€
Rating 7.6
Release 08 Feb 2018

1001 Spikes

Discover the lost treasures of Ukampa in South America as Aban Hawkins searches for his estranged father, world-famous archeaologist, Jim Hawkins. Aban Hawkins races into the frozen tundra of the antarctic, undiscovered temple ruins and the vast caverns of South America in search of his father and the legendary treasure rumored to lie...

Similarity 56%
Price 9.99€
Rating 7.8
Release 03 Jun 2014

Teenage Mutant Ninja Turtles: Splintered Fate

TMNT Splintered Fate - Unleash the Turtles in a rogue-like quest to rescue Splinter from the Foot Clan! Master ninja skills, unite in bodacious co-op gameplay, and conquer iconic NYC locales.

Similarity 55%
Price 27.99€
Rating 7.8
Release 06 Nov 2024

SONIC SUPERSTARS

Adventure through the mystical Northstar Islands in this all-new take on classic 2D Sonic high-speed action platforming.

Similarity 55%
Price -20% 48.27€
Rating 6.7
Release 16 Oct 2023

Teenage Mutant Ninja Turtles: Shredder's Revenge

Teenage Mutant Ninja Turtles: Shredder’s Revenge reunites Leonardo, Michelangelo, Donatello and Raphael as they kick shell in a beautifully realized beat ’em up.

Similarity 55%
Price -46% 13.42€
Rating 9.2
Release 16 Jun 2022

Kitaria Fables

Action Adventure fused with RPG and Farming elements. Armed with sword, bow and spellbook, fight against a rising darkness threatening the world. Plunder dungeons in search of relics and resources, tend to your farm to make provisions and potions, and take on quests solo, or with a friend!

Similarity 55%
Price -95% 1.02€
Rating 7.0
Release 01 Sep 2021

Wizard of Legend

Wizard of Legend is a no-nonsense, action-packed take on wizardry that emphasizes precise movements and smart comboing of spells in a rogue-like dungeon crawler that features over a hundred unique spells and relics!

Similarity 55%
Price -60% 6.46€
Rating 8.9
Release 15 May 2018

Relic Hunters Zero: Remix

Relic Hunters Zero: Remix is a remaster of the FREE 1 million player hit game about blasting evil space ducks and turtles with tiny cute guns. It’s fast, it’s tactical, and feels deliciously smooth to play. Unlock new weapons, characters and relics to defeat the Ducan Commander!

Similarity 55%
Price Free to play
Rating 9.0
Release 18 Aug 2015

Hammerwatch

A hack and slash action adventure, set in a fantasy pixel art environment. Play solo or co-op in this adventure from bottom to top of Castle Hammerwatch. Kill hordes of enemies with varied looks and features through four unique environments with traps, hidden secrets and puzzles.

Similarity 55%
Price -89% 1.12€
Rating 8.7
Release 12 Aug 2013

The Jackbox Party Pack 10

Become a party legend! The celebrated franchise returns with epic drawing battles in Tee K.O. 2, chaotic type-offs in FixyText, time-travel trivia in Timejinx, hidden identity intrigue in Hypnotorious, and group music-making in Dodo Re Mi.

Similarity 54%
Price -58% 12.50€
Rating 6.2
Release 18 Oct 2023

BOKURA

BOKURA is a two-player puzzle adventure game. Play as two boys who ran away from their homes and work together to take yourselves somewhere far, far away. Relive the friendship of your childhood through the journey of two boys.

Similarity 54%
Price 5.39€
Rating 8.9
Release 09 Aug 2023

The Jackbox Party Pack 7

Five new games: the hit threequel Quiplash 3, the collaborative chaos of The Devils and the Details, the fierce drawing game Champ’d Up, the speech game Talking Points and the guessing game Blather 'Round. Use phones or tablets as controllers and play with up to 8 players, and an audience of 10,000!

Similarity 54%
Price 29.99€
Rating 9.3
Release 14 Oct 2020

Blood™ Fresh Supply

Battle an army of sycophantic cultists, zombies, gargoyles, hellhounds, and an insatiable host of horrors in your quest to defeat the evil Tchernobog. Squirm through 42 loathesome levels filled with more atmosphere than a Lovecraftian mausoleum.

Similarity 54%
Price 8.19€
Rating 9.3
Release 09 May 2019

Wilmot's Warehouse

Wilmot's Warehouse is a puzzle game about keeping a warehouse running in tip-top shape. Just remember where you put everything, because when the service hatch opens, you'll need to find the things people want quickly, in order to earn the coveted Performance Stars.

Similarity 54%
Price 14.79€
Rating 9.0
Release 29 Aug 2019

METAL SLUG

“METAL SLUG ”, the very first title in SNK’s legendary 2D run & gun action shooting game series where all began, returns to the missions on the Steam gaming platform!

Similarity 54%
Price 7.99€
Rating 8.6
Release 25 Jun 2015

METAL SLUG X

“METAL SLUG X”, one of the most highly praised titles in the series among Metal Slug fans for its refined balance and game volume, heads out to the Steam gaming platform!

Similarity 54%
Price 7.99€
Rating 8.5
Release 02 Oct 2014

PixelJunk™ Shooter

In PixelJunk™ Shooter, you must pilot your spacecraft through a range of cavernous environments in a bid to save the scientists trapped underground. Making your way through the game will rely on your keen sense of observation and the ability to manipulate your surroundings.

Similarity 54%
Price 8.99€
Rating 8.4
Release 11 Nov 2013

Cook, Serve, Delicious!

One of the few hardcore restaurant sims in existence, Cook, Serve, Delicious! is a deceptively easy game to learn but incredibly challenging to master as you progress through your career from owning a terrible zero star cafe into a five star world famous restaurant.

Similarity 54%
Price -90% 1.00€
Rating 9.1
Release 08 Oct 2013

BattleBlock Theater®

Welcome to BattleBlock Theater! You’ve got no where to go but up...on stage. Play single player or co-op to free your friends and save Hatty Hattington! Jump, solve and battle your way through a mysterious theater inhabited by highly technological felines.

Similarity 54%
Price 14.99€
Rating 9.6
Release 15 May 2014

Brothers - A Tale of Two Sons

Guide two brothers on an epic fairy tale journey from visionary Swedish film director, Josef Fares and top-tier developer Starbreeze Studios. Control both brothers at once as you experience co-op play in single player mode, like never before.

Similarity 54%
Price 14.99€
Rating 9.3
Release 03 Sep 2013

Tom Clancy's Splinter Cell Chaos Theory®

The year is 2008. Citywide blackouts ... stock exchange sabotage ... electronic hijacking of national defense systems ... this is information warfare. To prevent these attacks, operatives must infiltrate deep into hostile territory and aggressively collect critical intelligence, closer than ever to enemy soldiers.

Similarity 54%
Price 9.99€
Rating 9.0
Release 27 Aug 2009

The Backrooms: Unbounded

The Backrooms: Unbounded is a Free Simple Linear single player first person body camera horror game based on the backrooms. You take the role of a police officer who noclips out of reality while on duty. Will you make it out alive?

Similarity 54%
Price Free to play
Rating 7.2
Release 25 Dec 2023

Most played games like 39 Days to Mars on Steam

Take a look at the top games like 39 Days to Mars that are currently attracting the largest player bases on the Steam platform, as of April 19th 2025.

1. It Takes Two

Similarity 67% Embark on the craziest journey of your life in It Takes Two. Invite a friend to join for free with Friend’s Pass and work together across a huge variety of gleefully disruptive gameplay challenges. Winner of GAME OF THE YEAR at the Game Awards 2021. It Takes Two is a co-op, multiplayer and split screen game developed by Hazelight Studios and published by Electronic Arts. Released on March 25th 2021 has received 213,158 reviews of which 202,975 were positive and 10,183 were negative resulting in an impressive rating of 9.4 out of 10. The game has hit the top spot as the #1 most played game like 39 Days to Mars, thanks to its 3,824 peak concurrent players over the last day.
9.4
202,975
10,183

3,824
players

2. Heroes® of Might & Magic® III - HD Edition

Similarity 58% The most popular Heroes® title of all time is back in HD! Fifteen years later, rediscover the epic tale of Queen Catherine Ironfist, as she re-embarks on her critically acclaimed quest to unite her ravaged homeland and re-conquer the kingdom of Erathia. Heroes® of Might & Magic® III - HD Edition is a strategy, turn-based strategy and classic game developed by DotEmu and published by Ubisoft Entertainment. Released on January 28th 2015 has received 22,492 reviews of which 17,844 were positive and 4,648 were negative resulting in a rating of 7.8 out of 10. While seeing 1,537 players online at once in the last 24 hours, this game is currently ranked #2 among games like 39 Days to Mars based on player count.
7.8
17,844
4,648

1,537
players

3. Kingdom Two Crowns

Similarity 53% Gather coins, build defenses and reclaim your fallen Kingdom. Explore and uncover secrets, unlock new technologies and protect your crown versus waves of Greed monsters that come at night. Kingdom is a solo or co-op micro-strategy and tower defense game set in an atmospheric pixel world. Kingdom Two Crowns is a tower defense, minimalist and city builder game developed by Stumpy🐙Squid, Fury Studios and Coatsink and published by Raw Fury. Released on December 11th 2018 has received 7,063 reviews of which 6,244 were positive and 819 were negative resulting in a rating of 8.6 out of 10. While seeing 1,401 players online at once in the last 24 hours, this game is currently ranked #3 among games like 39 Days to Mars based on player count.
8.6
6,244
819

1,401
players

4. Resident Evil 5

Similarity 57% This game is a port of the Games for Windows - Live version that was released in 2009. If you buy the Untold Stories Bundle here on Steam, it will be the same as upgrading to Resident Evil 5 Gold Edition. Resident Evil 5 is a co-op, action and zombies game developed and published by Capcom. Released on September 15th 2009 has received 48,198 reviews of which 41,983 were positive and 6,215 were negative resulting in a rating of 8.6 out of 10. With 804 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played games like 39 Days to Mars.
8.6
41,983
6,215

804
players

5. Castle Crashers®

Similarity 54% Hack, slash, and smash your way to victory in this award winning 2D arcade adventure from The Behemoth! Castle Crashers® is a 2d, online co-op and co-op game developed and published by The Behemoth. Released on September 26th 2012 has received 124,817 reviews of which 119,996 were positive and 4,821 were negative resulting in an impressive rating of 9.5 out of 10. With 803 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played games like 39 Days to Mars.
9.5
119,996
4,821

803
players

6. Escape Simulator

Similarity 56% First-person puzzler you can play solo or in an online co-op. Explore a set of highly interactive escape rooms. Move furniture, pick up and examine everything, smash pots and break locks! Play thousands of community-made rooms through the level editor. Escape Simulator is a puzzle, co-op and multiplayer game developed and published by Pine Studio. Released on October 19th 2021 has received 17,031 reviews of which 16,029 were positive and 1,002 were negative resulting in an impressive rating of 9.2 out of 10. With 711 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played games like 39 Days to Mars.
9.2
16,029
1,002

711
players

7. LEGO® Star Wars™: The Skywalker Saga

Similarity 61% Play through all nine Skywalker saga films in a game unlike any other. With over 300 playable characters, over 100 vehicles, and 23 planets to explore, a galaxy far, far away has never been more fun! *Includes classic Obi-Wan Kenobi playable character LEGO® Star Wars™: The Skywalker Saga is a lego, adventure and co-op game developed by TT Games and published by Warner Bros. Games and Warner Bros. Interactive Entertainment. Released on April 05th 2022 has received 44,647 reviews of which 40,527 were positive and 4,120 were negative resulting in a rating of 8.9 out of 10. With 636 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played games like 39 Days to Mars.
8.9
40,527
4,120

636
players

8. Resident Evil 6

Similarity 57% Blending action and survival horror, Resident Evil 6 promises to be the dramatic horror experience of 2013. Resident Evil 6 is a action, zombies and co-op game developed and published by Capcom. Released on March 21st 2013 has received 54,020 reviews of which 42,461 were positive and 11,559 were negative resulting in a rating of 7.8 out of 10. With 635 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played games like 39 Days to Mars.
7.8
42,461
11,559

635
players

9. Human Fall Flat

Similarity 67% Human Fall Flat is a hilarious, light-hearted platformer set in floating dreamscapes that can be played solo or with up to 8 players online. Free new levels keep its vibrant community rewarded. Human Fall Flat is a co-op, funny and puzzle game developed by No Brakes Games and published by Curve Games. Released on July 22nd 2016 has received 212,596 reviews of which 201,282 were positive and 11,314 were negative resulting in an impressive rating of 9.4 out of 10. With 629 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played games like 39 Days to Mars.
9.4
201,282
11,314

629
players

10. NARUTO SHIPPUDEN: Ultimate Ninja STORM 4

Similarity 58% The latest opus in the acclaimed STORM series is taking you on a colourful and breathtaking ride. Take advantage of the totally revamped battle system and prepare to dive into the most epic fights you’ve ever seen ! NARUTO SHIPPUDEN: Ultimate Ninja STORM 4 is a anime, fighting and action game developed by CyberConnect2 Co. Ltd. and published by Bandai Namco Entertainment. Released on February 04th 2016 has received 88,074 reviews of which 80,134 were positive and 7,940 were negative resulting in a rating of 9.0 out of 10. With 526 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played games like 39 Days to Mars.
9.0
80,134
7,940

526
players

Best deals on games like 39 Days to Mars on Steam

Discover fantastic savings with the best discounts on a variety of games like 39 Days to Mars available on Steam right now, updated on April 19th 2025. Looking for even more deals? Use the search filters to explore a wider range of discounted games like 39 Days to Mars.

1. Trine 2: Complete Story

Similarity 68% Three Heroes make their way through dangers untold in a fairytale world, featuring physics-based puzzles, beautiful sights and online co-op. Trine 2: Complete Story is a puzzle-platformer, platformer and adventure game developed and published by Frozenbyte. Released on June 06th 2013 has received 21,624 reviews of which 20,629 were positive and 995 were negative resulting in an impressive rating of 9.3 out of 10. Featuring a massive 95% discount, this game currently holds the #1 spot in the best deals for games like 39 Days to Mars.
9.3
20,629
995

-95% 20.00€ 1.00€

2. Scribblenauts Unmasked: A DC Comics Adventure

Similarity 53% In Scribblenauts Unmasked: A DC Comics Adventure, Maxwell unites with Batman™, Superman™ and the rest of The Justice League™ to restore order to the DC Comics Universe. Challenge your imagination as you battle the mightiest villains in an exciting, action-filled adventure through GOTHAM CITY™, METROPOLIS™, ATLANTIS™ and other iconic... Scribblenauts Unmasked: A DC Comics Adventure is a adventure, superhero and action game developed by 5th Cell Media and published by Warner Bros. Interactive Entertainment. Released on September 24th 2013 has received 2,306 reviews of which 1,894 were positive and 412 were negative resulting in a rating of 7.9 out of 10. Thanks to its incredible 95% discount, this game is now the #2 best deal in games like 39 Days to Mars.
7.9
1,894
412

-95% 20.00€ 1.00€

3. Morkredd

Similarity 57% Morkredd is a tense, physics-based co-op puzzle game for one to two players combining skill-based puzzle-solving, a challenging balance of light and shadow, and a dark world full of secrets to unlock. Morkredd is a physics, puzzle and local co-op game developed and published by Hyper Games. Released on December 10th 2020 has received 465 reviews of which 371 were positive and 94 were negative resulting in a rating of 7.5 out of 10. Thanks to its incredible 95% discount, this game is now the #3 best deal in games like 39 Days to Mars.
7.5
371
94

-95% 20.00€ 1.00€

4. Kitaria Fables

Similarity 55% Action Adventure fused with RPG and Farming elements. Armed with sword, bow and spellbook, fight against a rising darkness threatening the world. Plunder dungeons in search of relics and resources, tend to your farm to make provisions and potions, and take on quests solo, or with a friend! Kitaria Fables is a co-op, action rpg and farming sim game developed by Twin Hearts and published by PQube. Released on September 01st 2021 has received 1,497 reviews of which 1,079 were positive and 418 were negative resulting in a rating of 7.0 out of 10. Currently offered at a significant 95% discount, this title has earned the #4 position in the best deals for games like 39 Days to Mars.
7.0
1,079
418

-95% 20.40€ 1.02€

5. Cook, Serve, Delicious! 3?!

Similarity 56% Cook, serve and manage your food truck as you dish out hundreds of different foods across war-torn America in this massive sequel to the million-selling series! Cook, Serve, Delicious! 3?! is a typing, management and difficult game developed and published by Vertigo Gaming Inc.. Released on October 14th 2020 has received 2,135 reviews of which 1,943 were positive and 192 were negative resulting in a rating of 8.7 out of 10. Currently offered at a significant 94% discount, this title has earned the #5 position in the best deals for games like 39 Days to Mars.
8.7
1,943
192

-94% 16.67€ 1.00€

6. TowerFall Ascension

Similarity 53% TowerFall Ascension is the definitive version of the hit archery combat game. Inspired by classics from the golden age of couch multiplayer, it's a 4-player local party game centering around hilarious, intense versus matches. The core mechanics are simple and accessible, but hard to master and combat is fierce. TowerFall Ascension is a local multiplayer, indie and 2d fighter game developed by Maddy Makes Games Inc., Extremely OK Games and Ltd. and published by Maddy Makes Games Inc.. Released on March 11th 2014 has received 3,399 reviews of which 3,226 were positive and 173 were negative resulting in an impressive rating of 9.1 out of 10. Currently offered at a significant 93% discount, this title has earned the #6 position in the best deals for games like 39 Days to Mars.
9.1
3,226
173

-93% 14.29€ 1.00€

7. Trine 4: The Nightmare Prince

Similarity 68% The best-selling Trine series returns to the magic of 2.5D! Join three iconic heroes as they set off on a quest through fantastical fairytale landscapes to save the world from the Nightmare Prince’s shadows. Trine 4: The Nightmare Prince is a puzzle-platformer, local co-op and online co-op game developed and published by Frozenbyte. Released on October 08th 2019 has received 13,203 reviews of which 11,784 were positive and 1,419 were negative resulting in a rating of 8.7 out of 10. Currently offered at a significant 93% discount, this title has earned the #7 position in the best deals for games like 39 Days to Mars.
8.7
11,784
1,419

-93% 28.14€ 1.97€

8. Shift Happens

Similarity 64% Shift Happens is a cooperative platformer for two. You and a friend shift your mass, throw each other and puzzle your way through four stages of stylized imaginary worlds. Including the occasional backstabbing and taunting. Play with a friend on a couch, online or even special singleplayer levels. Shift Happens is a co-op, online co-op and local co-op game developed by Klonk Games and published by Daedalic Entertainment. Released on February 22nd 2017 has received 3,969 reviews of which 3,140 were positive and 829 were negative resulting in a rating of 7.7 out of 10. Currently offered at a significant 93% discount, this title has earned the #8 position in the best deals for games like 39 Days to Mars.
7.7
3,140
829

-93% 14.71€ 1.03€

9. F.E.A.R. 3

Similarity 53% F.E.A.R. 3 delivers all the hallmarks that define the F.E.A.R. brand: terrifying paranormal experience, frenetic combat and a dramatic storyline. F.E.A.R. 3 is a fps, horror and co-op game developed by Day 1 Studios and published by Warner Bros. Interactive Entertainment. Released on June 21st 2011 has received 12,640 reviews of which 9,005 were positive and 3,635 were negative resulting in a rating of 7 out of 10. Currently offered at a significant 93% discount, this title has earned the #9 position in the best deals for games like 39 Days to Mars.
7
9,005
3,635

-93% 19.71€ 1.38€

10. KeyWe

Similarity 58% KeyWe is a cute, co-operative postal puzzler starring Jeff and Debra, two small kiwi birds working in a whimsical post office. They must jump, flap, peck and butt-slam their way across an interactive landscape of levers, bells and buttons to get those messages delivered on time! KeyWe is a co-op, puzzle-platformer and cute game developed by Stonewheat & Sons and published by Fireshine Games. Released on August 31st 2021 has received 1,816 reviews of which 1,645 were positive and 171 were negative resulting in a rating of 8.6 out of 10. Currently offered at a significant 92% discount, this title has earned the #10 position in the best deals for games like 39 Days to Mars.
8.6
1,645
171

-92% 25.00€ 2.00€

Free games like 39 Days to Mars on Steam

Check out this fantastic list of free-to-play games like 39 Days to Mars you can enjoy on Steam right now, updated on April 19th 2025. Looking for even more free titles? Use the search filters to explore a wider range of free to play games like 39 Days to Mars.

1. We Were Here

Similarity 53% Lost in a frozen wasteland and split up from your partner inside an abandoned castle, the only possession you have left is a walkie-talkie with a familiar voice on the other end. Can the two of you find your way out in time? We Were Here is a free to play, co-op and escape room game developed and published by Total Mayhem Games. Released on February 03rd 2017 has received 29,652 reviews of which 26,762 were positive and 2,890 were negative resulting in a rating of 8.8 out of 10. With 243 active players enjoying it for free, this strategy game has reached the #1 spot among the top free games like 39 Days to Mars.
8.8
26,762
2,890

243
players

2. Pixel Puzzles Ultimate Jigsaw Puzzles

Similarity 67% The Number 1 Jigsaw Puzzle Game. Pixel Puzzles Ultimate Jigsaw Puzzles is a puzzle, board game and tabletop game developed and published by Pixel Puzzles. Released on August 29th 2022 has received 2,664 reviews of which 2,007 were positive and 657 were negative resulting in a rating of 7.3 out of 10. Thanks to its free to play tag and a daily player base of 108, this game has secured the #2 spot in the ranking of free games like 39 Days to Mars.
7.3
2,007
657

108
players

3. Cube Escape: Paradox

Similarity 58% The tenth Cube Escape follows the story of detective Dale Vandermeer who finds himself trapped in two different universes and needs to escape. Cube Escape: Paradox will be released together with the accompanying Paradox: A Rusty Lake Film. Cube Escape: Paradox is a puzzle, free to play and psychological horror game developed and published by Rusty Lake. Released on September 20th 2018 has received 10,295 reviews of which 10,013 were positive and 282 were negative resulting in an impressive rating of 9.4 out of 10. The game currently holds the #3 spot among the most played free games like 39 Days to Mars.
9.4
10,013
282

82
players

4. Escape Memoirs: Mini Stories

Similarity 58% "Escape Memoirs: Mini Stories" is a series of co-operative escape-room style puzzle scenarios. Each one is sure to test your wits as you try to overcome the challenges that stand in the way of your escape. Escape Memoirs: Mini Stories is a free to play, multiplayer and escape room game developed and published by 0 Deer Soft. Released on September 30th 2022 has received 5,302 reviews of which 4,497 were positive and 805 were negative resulting in a rating of 8.2 out of 10. The game currently holds the #4 spot among the most played free games like 39 Days to Mars.
8.2
4,497
805

81
players

5. Escape Memoirs: Questionable Side Stories

Similarity 59% 'Escape Memoirs: Questionable Side Stories' is a humorous co-operative escape room game where you are a henchman who has to make his way through variety of puzzles to make it to a job interview on time. Can you solve all of the puzzles that stand in the way of your employment? Escape Memoirs: Questionable Side Stories is a escape room, multiplayer and co-op game developed and published by 0 Deer Soft. Released on August 07th 2023 has received 1,445 reviews of which 1,370 were positive and 75 were negative resulting in a rating of 9.0 out of 10. The game currently holds the #5 spot among the most played free games like 39 Days to Mars.
9.0
1,370
75

37
players

6. PICO PARK:Classic Edition

Similarity 60% PICO PARK:Classic Edition is a cooperative local multiplay action puzzle game for 2-10 players. PICO PARK:Classic Edition is a multiplayer, local co-op and free to play game developed and published by TECOPARK. Released on April 27th 2016 has received 1,503 reviews of which 1,086 were positive and 417 were negative resulting in a rating of 7.0 out of 10. The game currently holds the #6 spot among the most played free games like 39 Days to Mars.
7.0
1,086
417

26
players

7. The Expendabros

Similarity 59% The Expendabros have assembled and set their sights on the forces of ruthless arms dealer Conrad Stonebanks in the forests of Eastern Europe. The Expendabros is a free to play, action and pixel graphics game developed by Free Lives and published by Devolver Digital. Released on August 05th 2014 has received 18,168 reviews of which 17,657 were positive and 511 were negative resulting in an impressive rating of 9.5 out of 10. The game currently holds the #7 spot among the most played free games like 39 Days to Mars.
9.5
17,657
511

15
players

8. Relic Hunters Zero: Remix

Similarity 55% Relic Hunters Zero: Remix is a remaster of the FREE 1 million player hit game about blasting evil space ducks and turtles with tiny cute guns. It’s fast, it’s tactical, and feels deliciously smooth to play. Unlock new weapons, characters and relics to defeat the Ducan Commander! Relic Hunters Zero: Remix is a looter shooter, twin stick shooter and action game developed by Rogue Snail and published by Akupara Games. Released on August 18th 2015 has received 6,771 reviews of which 6,316 were positive and 455 were negative resulting in an impressive rating of 9.0 out of 10. The game currently holds the #8 spot among the most played free games like 39 Days to Mars.
9.0
6,316
455

5
players

9. The Backrooms: Unbounded

Similarity 54% The Backrooms: Unbounded is a Free Simple Linear single player first person body camera horror game based on the backrooms. You take the role of a police officer who noclips out of reality while on duty. Will you make it out alive? The Backrooms: Unbounded is a horror, psychological horror and singleplayer game developed and published by BluSkie. Released on December 25th 2023 has received 566 reviews of which 428 were positive and 138 were negative resulting in a rating of 7.2 out of 10. The game currently holds the #9 spot among the most played free games like 39 Days to Mars.
7.2
428
138

1
players

10. Scrap Garden - The Day Before

Similarity 56% A new chapter of charming 3D platformer about the little rusty robot C4N who unwittingly finds himself in the midst of momentous events in Robo Land. In order to solve the new riddle, Canny will once again need to run and jump a lot, solve puzzles, and fight against enemies who are much bigger and stronger than he is. Scrap Garden - The Day Before is a adventure, action and free to play game developed by Egidijus Bachur and Alexey Davydov and published by Flazm. Released on October 07th 2016 has received 987 reviews of which 748 were positive and 239 were negative resulting in a rating of 7.3 out of 10. The game currently holds the #10 spot among the most played free games like 39 Days to Mars.
7.3
748
239