Games like Diplomacy is Not an Option on Steam
For those who prefer not to search, lists of the most played, top deals and best free games like Diplomacy is Not an Option are available at the bottom of the page.
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Thronefall
A minimalist game about building and defending your little kingdom.
Catizens
Inspired by RimWorld and The Sims, Catizens is a colony management simulation game where you watch over unique cats with quirky personalities, as you help them build and grow their settlement while exploring new lands, facing off against wildlife and overcoming the challenges of each environment.
Kingdom Two Crowns
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 Eighties
Kingdom Eighties is a short story-based standalone expansion set in the Kingdom universe. A rad adventure of micro-strategy and base building in vivid ‘80s neon. Defend your town against the mysterious Greed and discover the secrets of your family lineage!
Starmancer
From a small 2-man team comes a unique space station management sim. Take on the role of an A.I commanding a lost space ark. Try not to let your crew run amok and wreck the place.
Amazing Cultivation Simulator
Rise up in a search for immortality in this strategy sim and management game based on Chinese mythology. Rebuild your sect and train new disciples through the path of cultivation. Research magic and gather mystical artifacts, face ancient dangers and other sects in your path to spiritual ascension.
The Universim
Jump straight into managing your own planets as you guide a civilization through the ages. Build the ultimate empire in The Universim, a new breed of God Game in development by Crytivo.
Project AURA
Project Aura is a micro management game where you lead a Colony of Climate Disaster Survivors. You have been assigned the mission to build an habitat capable of survival in this new unknown world.
Airborne Empire
Build your sky city while exploring a vast landscape in this Open World RPG City Builder. Combining the methodical construction and management of a city builder; the unique lift, balance, and propulsion needed for a flying city; and the compelling characters, dangers, and adventures of an RPG!
Gladiator Guild Manager
A strategic autobattler sim where you build a team of gladiators, compete in arenas, plan fight tactics, and form alliances. Combine fighters, beasts, and mages, develop and equip them to optimize your well-oiled fighting machine, dominate the championships, and leave your mark on the world.
Conan Unconquered
From the Command & Conquer veterans at Petroglyph comes the first ever survival RTS set in the savage world of Conan the Barbarian. Play solo or team up in multiplayer in Conan Unconquered’s action-packed co-op Mode where you build a shared stronghold and fend off the hordes together.
MarZ: Tactical Base Defense
Build your defense base to fight back the undead hordes of Mars and secure the future of the red planet. MarZ is a game of strategy and tactical defense where you must carefully manage your crew and resources as you try to uncover the terrible secrets of the undead.
Anno 1404 - History Edition
Relive the captivating gameplay of a true city-building classic with Anno® 1404 History Edition.
Odd Realm
Dive into Odd Realm, a mystical colony sim set in a land of fantasy! Lead your settlers to construct a thriving haven, navigating unpredictable seasons, elusive bandits, unseen horrors, and fabled gods. Every choice etches your colony's destiny, igniting a saga of adventure, peril, and triumph.
Mad Smartphone Tycoon
Build Your smartphone Empire in Mad Smartphone Tycoon, your main goal in this game is to create the ultimate smartphone that combines both performance and aesthetics. Expand your company, dominate the global market, become a tycoon in the world of mobile phones!
RollerCoaster Tycoon® 3: Complete Edition
Build the park of a lifetime and rediscover the critically acclaimed rollercoaster simulation bestseller. Feel the thrill of a genre-defining classic, complete with two huge expansion packs.
Lords and Villeins
Build a prosperous settlement in a unique simulation of a feudal economy - each family runs their shop, owns their goods, and trades with other villagers in a free market. You will manage the land, build houses, organise events, set taxes, and balance supply and demand while engaging in diplomacy!
Honey, I Joined a Cult
It's time to start working towards that ultimate goal of enlightenment, faith and money…lots and lots of money! Become the ultimate tycoon - create, customise, and manage your own cult whilst listening to funky music. Welcome to Honey, I Joined a Cult!
Academia : School Simulator
Design, build, and manage a high school with terrific teachers and fantastic facilities or simply let your students poop in the bushes? Academia : School Simulator is a management/tycoon game where you get to decide!
Knights and Merchants
KNIGHTS and MERCHANTS recreates the era of the Middle Ages. Apart from the purely fictitious geography of our world, all game elements and scenes are based on the Anglo-Saxon period, 1200 A.D. And we haven't used imaginary elements like fabled creatures, either. The player takes on the role of an ordinary captain in the Palace Guard.
The Guild II Renaissance
For centuries Europe has been dominated by the church and nobility. On the shoulders of ordinary people the servants of god and the noble families justified their power and wealth. This was the incontrovertible, divine world order. A truly dark era… In the 14th Century the world order is beginning to transform itself.
Gnomes
A turn-based tower defense with deep roguelike progression, set in ever-expanding, procedurally generated biomes. Build, farm and defend your village as you push deeper into goblin-infested territory. Unlock powerful upgrades and craft your environment to survive the endless goblin horde.
Drill Core
Corporate greed meets strategic planet-mining in Drill Core! Drill to the heart of planets while managing workers, researching cutting-edge tech, and fortifying against alien attacks. Will you prioritize efficiency and risk your workers' safety, or focus on defense for survival?Most played games like Diplomacy is Not an Option on Steam
Take a look at the top games like Diplomacy is Not an Option that are currently attracting the largest player bases on the Steam platform, as of April 19th 2025.
1. RimWorld
Similarity 62% A sci-fi colony sim driven by an intelligent AI storyteller. Generates stories by simulating psychology, ecology, gunplay, melee combat, climate, biomes, diplomacy, interpersonal relationships, art, medicine, trade, and more. RimWorld is a colony sim, base-building and survival game developed and published by Ludeon Studios. Released on October 17th 2018 has received 207,748 reviews of which 203,531 were positive and 4,217 were negative resulting in an impressive rating of 9.7 out of 10. The game has hit the top spot as the #1 most played game like Diplomacy is Not an Option, thanks to its 22,530 peak concurrent players over the last day.
9.7
203,531
4,217
22,530
players
2. Factorio
Similarity 52% Factorio is a game about building and creating automated factories to produce items of increasing complexity, within an infinite 2D world. Use your imagination to design your factory, combine simple elements into ingenious structures, and finally protect it from the creatures who don't really like you. Factorio is a automation, base-building and resource management game developed and published by Wube Software LTD.. Released on August 14th 2020 has received 212,622 reviews of which 206,226 were positive and 6,396 were negative resulting in an impressive rating of 9.6 out of 10. While seeing 18,327 players online at once in the last 24 hours, this game is currently ranked #2 among games like Diplomacy is Not an Option based on player count.
9.6
206,226
6,396
18,327
players
3. Age of Empires IV: Anniversary Edition
Similarity 59% Celebrating its first year of delighting millions of global players, the award-winning and best-selling strategy franchise continues with Age of Empires IV: Anniversary Edition, putting you at the center of even more epic historical battles that shaped the world. Age of Empires IV: Anniversary Edition is a strategy, rts and base-building game developed by Relic Entertainment, Forgotten Empires, Climax Studios and World's Edge and published by Xbox Game Studios. Released on October 28th 2021 has received 78,584 reviews of which 67,670 were positive and 10,914 were negative resulting in a rating of 8.5 out of 10. While seeing 9,669 players online at once in the last 24 hours, this game is currently ranked #3 among games like Diplomacy is Not an Option based on player count.
8.5
67,670
10,914
9,669
players
4. Oxygen Not Included
Similarity 64% Oxygen Not Included is a space-colony simulation game. Deep inside an alien space rock your industrious crew will need to master science, overcome strange new lifeforms, and harness incredible space tech to survive, and possibly, thrive. Oxygen Not Included is a colony sim, base-building and survival game developed and published by Klei Entertainment. Released on July 30th 2019 has received 127,145 reviews of which 123,019 were positive and 4,126 were negative resulting in an impressive rating of 9.5 out of 10. With 5,652 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played games like Diplomacy is Not an Option.
9.5
123,019
4,126
5,652
players
5. Kenshi
Similarity 62% A free-roaming squad based RPG. Focusing on open-ended sandbox gameplay features rather than a linear story. Be a trader, a thief, a rebel, a warlord, an adventurer, a farmer, a slave, or just food for the cannibals. Train your men up from puny victims to master warriors. Kenshi is a open world, sandbox and rpg game developed and published by Lo-Fi Games. Released on December 06th 2018 has received 95,436 reviews of which 91,127 were positive and 4,309 were negative resulting in an impressive rating of 9.4 out of 10. With 4,024 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played games like Diplomacy is Not an Option.
9.4
91,127
4,309
4,024
players
6. Timberborn
Similarity 53% Humans are long gone. In a world struck by droughts and toxic waste, will your lumberpunk beavers do any better? A city-building game featuring ingenious animals, vertical architecture, water physics, and terraforming. Contains high amounts of wood. Timberborn is a city builder, voxel and colony sim game developed and published by Mechanistry. Released on September 15th 2021 has received 30,487 reviews of which 29,108 were positive and 1,379 were negative resulting in an impressive rating of 9.3 out of 10. With 3,338 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played games like Diplomacy is Not an Option.
9.3
29,108
1,379
3,338
players
7. Manor Lords
Similarity 67% Manor Lords is a medieval strategy game featuring in-depth city building, large-scale tactical battles, and complex economic and social simulations. Rule your lands as a medieval lord – the seasons pass, the weather changes, and cities rise and fall. Manor Lords is a strategy, city builder and simulation game developed by Slavic Magic and published by Hooded Horse. Released on April 26th 2024 has received 70,570 reviews of which 61,069 were positive and 9,501 were negative resulting in a rating of 8.5 out of 10. With 2,899 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played games like Diplomacy is Not an Option.
8.5
61,069
9,501
2,899
players
8. Dyson Sphere Program
Similarity 59% Build the most efficient intergalactic factory in space simulation strategy game Dyson Sphere Program! Harness the power of stars, collect resources, plan and design production lines and develop your interstellar factory from a small space workshop to a galaxy-wide industrial empire. Dyson Sphere Program is a automation, space and base-building game developed by Youthcat Studio and published by Gamera Games. Released on January 20th 2021 has received 84,564 reviews of which 82,585 were positive and 1,979 were negative resulting in an impressive rating of 9.6 out of 10. With 2,422 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played games like Diplomacy is Not an Option.
9.6
82,585
1,979
2,422
players
9. Jurassic World Evolution 2
Similarity 52% Jurassic World Evolution 2 is the much-anticipated sequel to Frontier’s highly successful Jurassic World Evolution. This bold new era in the Jurassic World Evolution game franchise builds upon the ground-breaking and immersive 2018 management simulation. Jurassic World Evolution 2 is a dinosaurs, building and simulation game developed and published by Frontier Developments. Released on November 09th 2021 has received 35,546 reviews of which 31,755 were positive and 3,791 were negative resulting in a rating of 8.8 out of 10. With 2,182 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played games like Diplomacy is Not an Option.
8.8
31,755
3,791
2,182
players
10. Northgard
Similarity 63% Northgard is a critically acclaimed strategy game based on Norse mythology. Lead your clan, uncover the secrets of a mysterious newfound continent and defeat your enemies to conquer the Throne! Northgard is a strategy, city builder and simulation game developed and published by Shiro Games. Released on March 07th 2018 has received 64,080 reviews of which 55,486 were positive and 8,594 were negative resulting in a rating of 8.5 out of 10. With 2,144 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played games like Diplomacy is Not an Option.
8.5
55,486
8,594
2,144
players
Best deals on games like Diplomacy is Not an Option on Steam
Discover fantastic savings with the best discounts on a variety of games like Diplomacy is Not an Option 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 Diplomacy is Not an Option.
1. Naheulbeuk's Dungeon Master
Similarity 54% A dungeon in danger ! Build, manage, and defend your tower in the satirical heroic fantasy universe of Dungeon of Naheulbeuk. From a shaky establishment to an infamous lair! Naheulbeuk's Dungeon Master is a management, simulation and funny game developed by Artefacts Studio and published by Dear Villagers. Released on November 15th 2023 has received 1,373 reviews of which 988 were positive and 385 were negative resulting in a rating of 7.0 out of 10. Featuring a massive 96% discount, this game currently holds the #1 spot in the best deals for games like Diplomacy is Not an Option.
7.0
988
385
-96%
25.00€
1.00€
2. Lords and Villeins
Similarity 55% Build a prosperous settlement in a unique simulation of a feudal economy - each family runs their shop, owns their goods, and trades with other villagers in a free market. You will manage the land, build houses, organise events, set taxes, and balance supply and demand while engaging in diplomacy! Lords and Villeins is a colony sim, strategy and city builder game developed by Honestly Games and published by Fulqrum Publishing. Released on November 10th 2022 has received 868 reviews of which 628 were positive and 240 were negative resulting in a rating of 6.9 out of 10. Thanks to its incredible 96% discount, this game is now the #2 best deal in games like Diplomacy is Not an Option.
6.9
628
240
-96%
27.50€
1.10€
3. Founders' Fortune
Similarity 70% A fantasy village builder focusing on creative building, colonist psychology and base defense. Handle resources, farming, production, tools, diplomacy, families, trading, defense, and research, as well as the wishes, expectations, thoughts, and equipment of every villager. Founders' Fortune is a colony sim, base-building and city builder game developed and published by Dionic Software. Released on December 18th 2020 has received 2,097 reviews of which 1,688 were positive and 409 were negative resulting in a rating of 7.7 out of 10. Thanks to its incredible 95% discount, this game is now the #3 best deal in games like Diplomacy is Not an Option.
7.7
1,688
409
-95%
20.00€
1.00€
4. InfraSpace
Similarity 51% Create an extrasolar efficiency utopia from scratch! In this sci-fi city builder you need to start mining operations, plan production, and lay down transportation routes to ensure a smooth supply chain. InfraSpace is a city builder, automation and transportation game developed and published by Dionic Software. Released on September 22nd 2023 has received 1,611 reviews of which 1,297 were positive and 314 were negative resulting in a rating of 7.7 out of 10. Currently offered at a significant 95% discount, this title has earned the #4 position in the best deals for games like Diplomacy is Not an Option.
7.7
1,297
314
-95%
20.00€
1.00€
5. Autonauts vs Piratebots
Similarity 54% Create, automate and defend an impenetrable base. Assemble and command a Bot army to combat an entire Piratebot invasion. Build, program and battle your way through five different zones. Autonauts vs Piratebots is a simulation, strategy and automation game developed by Denki and published by Curve Games. Released on July 28th 2022 has received 480 reviews of which 380 were positive and 100 were negative resulting in a rating of 7.5 out of 10. Currently offered at a significant 95% discount, this title has earned the #5 position in the best deals for games like Diplomacy is Not an Option.
7.5
380
100
-95%
20.00€
1.00€
6. Honey, I Joined a Cult
Similarity 55% It's time to start working towards that ultimate goal of enlightenment, faith and money…lots and lots of money! Become the ultimate tycoon - create, customise, and manage your own cult whilst listening to funky music. Welcome to Honey, I Joined a Cult! Honey, I Joined a Cult is a simulation, base-building and resource management game developed by Sole Survivor Games and published by Team17. Released on November 03rd 2022 has received 1,716 reviews of which 1,270 were positive and 446 were negative resulting in a rating of 7.2 out of 10. Currently offered at a significant 95% discount, this title has earned the #6 position in the best deals for games like Diplomacy is Not an Option.
7.2
1,270
446
-95%
23.40€
1.17€
7. Snowtopia: Ski Resort Builder
Similarity 63% Build your ideal ski resort. Keep skiers smiling with fresh pistes and fine facilities. Ski, build and chill in the wintry world of Snowtopia where everyone is welcome! Snowtopia: Ski Resort Builder is a simulation, building and management game developed by TeaForTwo and published by Goblinz Publishing and Maple Whispering Limited. Released on December 14th 2022 has received 1,165 reviews of which 714 were positive and 451 were negative resulting in a rating of 6.0 out of 10. Currently offered at a significant 94% discount, this title has earned the #7 position in the best deals for games like Diplomacy is Not an Option.
6.0
714
451
-94%
19.83€
1.19€
8. Medieval Kingdom Wars
Similarity 52% Rewrite medieval history through bloody siege combat in a fusion of RTS and Grand Strategy genres. Rule, build, and serve your King as a minor lord in medieval Europe. Experience siege, field and naval combat with an unseen degree of brutality. Rogue-like progression, epic towns and battles await… Medieval Kingdom Wars is a grand strategy, rts and medieval game developed by Reverie World Studios and published by indie.io. Released on January 03rd 2019 has received 2,585 reviews of which 1,977 were positive and 608 were negative resulting in a rating of 7.4 out of 10. Currently offered at a significant 93% discount, this title has earned the #8 position in the best deals for games like Diplomacy is Not an Option.
7.4
1,977
608
-93%
14.29€
1.00€
9. Stronghold Crusader 2
Similarity 60% Stronghold Crusader 2 is the long awaited sequel to the original castle sim. After 12 years Stronghold returns to the desert with a new 3D engine and powerful Havok Physics. Crusader 2 recaptures the original game’s addictive, fast-paced gameplay and authentic castle simulation. Stronghold Crusader 2 is a strategy, medieval and city builder game developed and published by FireFly Studios. Released on September 22nd 2014 has received 16,932 reviews of which 12,215 were positive and 4,717 were negative resulting in a rating of 7.1 out of 10. Currently offered at a significant 93% discount, this title has earned the #9 position in the best deals for games like Diplomacy is Not an Option.
7.1
12,215
4,717
-93%
34.57€
2.42€
10. Rise of Industry
Similarity 59% Put your entrepreneurial skills to the test in the first title in the ROI series as you create & optimise intricate production lines. As an early 20th-Century industrialist, grow your empire & adapt to an ever-changing business landscape with unexpected events that could lead to boom…or bust. Rise of Industry is a management, strategy and economy game developed by Dapper Penguin Studios and published by Kasedo Games. Released on May 02nd 2019 has received 4,089 reviews of which 2,995 were positive and 1,094 were negative resulting in a rating of 7.1 out of 10. Currently offered at a significant 92% discount, this title has earned the #10 position in the best deals for games like Diplomacy is Not an Option.
7.1
2,995
1,094
-92%
30.63€
2.45€
Free games like Diplomacy is Not an Option on Steam
Check out this fantastic list of free-to-play games like Diplomacy is Not an Option 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 Diplomacy is Not an Option.
1. Fallout Shelter
Similarity 50% Fallout Shelter puts you in control of a state-of-the-art underground Vault from Vault-Tec. Build the perfect Vault, keep your Dwellers happy, and protect them from the dangers of the Wasteland. Fallout Shelter is a free to play, base-building and survival game developed by Bethesda Game Studios and published by Bethesda Softworks. Released on March 29th 2017 has received 73,819 reviews of which 65,306 were positive and 8,513 were negative resulting in a rating of 8.7 out of 10. With 1,067 active players enjoying it for free, this strategy game has reached the #1 spot among the top free games like Diplomacy is Not an Option.
8.7
65,306
8,513
1,067
players
2. Stronghold Kingdoms
Similarity 60% A massively multiplayer grand strategy game, Stronghold Kingdoms is about forging alliances, political mind games, city-building and castle sieges with thousands of other players! Stronghold Kingdoms is a strategy, free to play and medieval game developed and published by FireFly Studios. Released on February 27th 2012 has received 9,307 reviews of which 5,953 were positive and 3,354 were negative resulting in a rating of 6.3 out of 10. Thanks to its free to play tag and a daily player base of 288, this game has secured the #2 spot in the ranking of free games like Diplomacy is Not an Option.
6.3
5,953
3,354
288
players
3. Kingdom: Classic
Similarity 59% Kingdom is a 2D sidescrolling strategy/resource management hybrid with a minimalist feel wrapped in a beautiful, modern pixel art aesthetic. Kingdom: Classic is a free to play, singleplayer and strategy game developed by Noio and Licorice and published by Raw Fury. Released on October 21st 2015 has received 21,983 reviews of which 19,934 were positive and 2,049 were negative resulting in a rating of 8.9 out of 10. The game currently holds the #3 spot among the most played free games like Diplomacy is Not an Option.
8.9
19,934
2,049
62
players
4. Oxygen: First Breath
Similarity 53% This is a free version of Oxygen, featuring the first 50 game-days. Build your city around the Oxygen Center and ensure your people's survival in a post-apocalyptic future, threatened by crack explosions, deadly winds, droughts and frosts. Lead your people and keep the Oxygen Center running! Oxygen: First Breath is a strategy, base building and simulation game developed by Turquoise Revival Games and published by GrabTheGames and UpgradePoint. Released on October 07th 2022 has received 1,584 reviews of which 1,423 were positive and 161 were negative resulting in a rating of 8.6 out of 10. The game currently holds the #4 spot among the most played free games like Diplomacy is Not an Option.
8.6
1,423
161
4
players
5. Crustacean Nations
Similarity 53% 🦀Crustacean Nations🦀 is a real-time strategy game about total crab warfare. Build a sprawling sand castle and amass huge armies to dominate the beach and become the one true crustacean nation! Crustacean Nations is a strategy, casual and action rts game developed and published by Team Beans. Released on August 19th 2022 has received 450 reviews of which 417 were positive and 33 were negative resulting in a rating of 8.6 out of 10. The game currently holds the #5 spot among the most played free games like Diplomacy is Not an Option.
8.6
417
33
2
players
6. Kingdom Wars
Similarity 50% Kingdom Wars is a free to play 3D MMORTS with real-time siege combat, without the pay to win element so common in the genre. Kingdom Wars offers beautiful 3D online world, where players construct strongholds, direct citizens, complete quests and eventually manage a global empire. Kingdom Wars is a strategy, free to play and rts game developed by Reverie World Studios and published by . Released on April 01st 2013 has received 2,778 reviews of which 1,871 were positive and 907 were negative resulting in a rating of 6.6 out of 10. The game currently holds the #6 spot among the most played free games like Diplomacy is Not an Option.
6.6
1,871
907
2
players
7. Garbage: Hobo Prophecy
Similarity 50% Experience the struggle which a homeless man goes through in a humorous manner. Primitive elements of contemporary life that we take for granted, such as staying warm, well-nourished, and hygienic, will become an issue. Garbage: Hobo Prophecy is a simulation, strategy and auto battler game developed by Homebased and published by GrabTheGames and UpgradePoint. Released on January 28th 2021 has received 1,391 reviews of which 1,023 were positive and 368 were negative resulting in a rating of 7.1 out of 10. The game currently holds the #7 spot among the most played free games like Diplomacy is Not an Option.
7.1
1,023
368