Best Diplomacy games on Steam
Unlike generic lists, our strategy game recommendations use a rigorous analysis of Steam user reviews to identify and feature only the best, community-validated diplomacy games. For those who prefer not to search, lists of the most played, top deals and best free diplomacy games are available at the bottom of the page.
Filters & Lists
Romance of the Three Kingdoms XI with Power Up Kit
"Romance of the Three Kingdoms 11 with Power Up Kit" is an expanded version of "Romance of the Three Kingdoms 11," which was released in 2006 as the 11th game in the series. The grand battles that shaped the course of Chinese history are shown in 3D space! In Administration, players freely develop cities.
Romance of the Three Kingdoms X with Power Up Kit
"Romance of the Three Kingdoms Ⅹ with Power Up Kit" is an expanded version of "Romance of the Three Kingdoms Ⅹ," which was released in 2004 as the 10th game in the series. In this release, the all-officer playable advances.
Call of War: World War 2
Take over the control of one of the mighty nations during the times of World War 2 in this persisting long-term strategy game. Conquer provinces, forge alliances and build up your economy in real-time. Research top secret weapons of World War 2 and become the one true superpower!
Romance of the Three Kingdoms IX with Power Up Kit
"Romance of the Three Kingdoms Ⅸ with Power Up Kit" is an expanded version of "Romance of the Three Kingdoms Ⅸ," which was released in 2003 as the 9th game in the series. RTK Ⅸ is a strategy based simulation game based in China's chaotic Three Kingdoms period.
Computer Tycoon
Computer Tycoon is a fairly complex Business Grand Strategy game about Computer Evolution. Start in the 70s, invent until 2034, create the best computer systems, upgrade your infrastructure, lead a team, and alter computer history! It is time to "Think Different"
Halcyon 6: Starbase Commander (LIGHTSPEED EDITION)
A retro space strategy RPG with base building, deep tactical combat, crew management and emergent storytelling. Halcyon 6: Lightspeed Edition is a massively enhanced version of the Award Winning indie strategy RPG, Halcyon 6.
The Shrouded Isle
Includes the Sunken Sins free DLC! Your Excellency, in this short game, we prepare for the awakening of our Lord. He hungers for human sacrifice. Sinners try to hide their dark secrets, but all must be purged...
First Strike
FIRST STRIKE is a fast paced real time strategy game where you play one of the twelve biggest nuclear superpowers of the world – from known superpowers like the USA to an upstart hellraiser like North Korea – and try to be the last one remaining when the whole world blows to smithereens.
Crisis in the Kremlin
Don’t let the Soviet Union collapse, and fall in the darkness of history or lead the Union by a new path – democracy and free market! But before you decide something, think – wouldn’t it cause more harm than good?
Realpolitiks
Become the leader of any contemporary country in this streamlined real-time grand strategy game. Use diplomacy, espionage, military and economic power to deal with other nations, while tackling issues such as terrorism, financial crises and medical epidemics, all in an effort to achieve global domination!
PRINCIPIA: Master of Science
Principia: Master of Science is a simulation game with the theme of European science in 17th century. Choose one of 12 real scientists from the era of Isaac Newton and proceed with your research. It is a time when even the term "Science" did not exist. Who can be the master of science?
Hearts of Iron IV
Victory is at your fingertips! Your ability to lead your nation is your supreme weapon, the strategy game Hearts of Iron IV lets you take command of any nation in World War II; the most engaging conflict in world history.
Stellaris
Explore a galaxy full of wonders in this sci-fi grand strategy game from Paradox Development Studios. Interact with diverse alien races, discover strange new worlds with unexpected events and expand the reach of your empire. Each new adventure holds almost limitless possibilities.
Twilight Struggle
Twilight Struggle is a two-player game where players play as either the US or USSR during the Cold War. Using actual events from history, players must plan out their strategies in order to obtain world dominance. Play Twilight Struggle and change the course of history.
NOBUNAGA'S AMBITION: Sphere of Influence - Ascension
In the simulation game series "Nobunaga's Ambition", players aim to unify Japan in the troubled times of the Warring States era. In this release we include "Officer Play" for the first time in the series, allowing players to advance from retainer to Castle Lord and then on to Daimyo.
Romance of the Three Kingdoms Maker
"Romance of the Three Kingdoms Maker" celebrates the 30th anniversary of the "Romance of the Three Kingdoms" series. It has been realized through a collaboration between the creators of the "Romance of the Three Kingdoms" series, Koei Tecmo Games, and the creators of the "TSUKURU" series, KADOKAWA.
Renowned Explorers: International Society
In this strategic rogue-like you become a famous expedition leader in the 19th century. You form your own crew with the skills and personality to discover legendary treasures, while exploring randomized locations and stories on every new adventure.
NOBUNAGA'S AMBITION: Sphere of Influence
Become a Daimyo of the Warring States period of Japanese history in NOBUNAGA'S AMBITION, a historical simulation game of conquest and domination. It is the 30th anniversary of this series and this current release, NOBUNAGA'S AMBITION: Sphere of Influence, is the crown of the series.
NOBUNAGA'S AMBITION: Kakushin with Power Up Kit
An extension of the 12th release in the Nobunaga’s Ambition series, Nobunaga’s Ambition: Iron Triangle, has appeared at the Steam Store as Nobunaga’s Ambition: Iron Triangle w/Power-up Kit!
Marble Age
Turn-based historical simulation strategy. Develop the Greek civilization from the small village to the great city-state when it will dominate the world!
Seven Kingdoms 2 HD
Get ready for an exciting real-time strategy game experience like no other with Seven Kingdoms 2! Say goodbye to the monotony of resource gathering and army building, its unique gameplay offers a thrilling blend of city management, trade, industry, espionage, diplomacy, and conquest!
NOBUNAGA'S AMBITION: Souzou
The 14th entry of the the historical simulation series "Nobunaga's Ambition." Become a daimyō of the Warring States era, and unite the land! With "the creation of a new age" as the key concept, this title features beautifully recreated castle towns, dynamic battlefield action and dramatic event scenes.
Europa Universalis IV
Rule your land and dominate the world with unparalleled freedom, depth and historical accuracy. Write a new history of the world and build an empire for the ages.Most played diplomacy games on Steam
Take a look at the top diplomacy games that are currently attracting the largest player bases on the Steam platform, as of April 16th 2025.
1. ROMANCE OF THE THREE KINGDOMS XIV
Triumph over the land, take charge of the fate of China! Conquer territories and fly your colors! ROMANCE OF THE THREE KINGDOMS XIV is a turn-based tactics, wargame and military game developed and published by KOEI TECMO GAMES CO. and LTD.. Released on January 15th 2020 has received 15,005 reviews of which 9,336 were positive and 5,669 were negative resulting in a rating of 6.2 out of 10. The game has hit the top spot as the #1 most played diplomacy game, thanks to its 660 peak concurrent players over the last day.
6.2
9,336
5,669
660
players
2. Sins of a Solar Empire®: Rebellion
Command a space-faring empire in Sins of a Solar Empire: Rebellion, the new stand-alone expansion that combines 4X depth with real-time strategy gameplay. Sins of a Solar Empire®: Rebellion is a management, diplomacy and online co-op game developed by Stardock Entertainment and Ironclad Games Corporation and published by Stardock Entertainment. Released on June 12th 2012 has received 15,971 reviews of which 14,879 were positive and 1,092 were negative resulting in an impressive rating of 9.1 out of 10. While seeing 257 players online at once in the last 24 hours, this game is currently ranked #2 among diplomacy games based on player count.
9.1
14,879
1,092
257
players
3. NOBUNAGA'S AMBITION: Sphere of Influence - Ascension
In the simulation game series "Nobunaga's Ambition", players aim to unify Japan in the troubled times of the Warring States era. In this release we include "Officer Play" for the first time in the series, allowing players to advance from retainer to Castle Lord and then on to Daimyo. NOBUNAGA'S AMBITION: Sphere of Influence - Ascension is a wargame, immersive sim and real time tactics game developed and published by KOEI TECMO GAMES CO. and LTD.. Released on March 23rd 2016 has received 1,039 reviews of which 725 were positive and 314 were negative resulting in a rating of 6.7 out of 10. While seeing 103 players online at once in the last 24 hours, this game is currently ranked #3 among diplomacy games based on player count.
6.7
725
314
103
players
4. Romance of the Three Kingdoms X with Power Up Kit
"Romance of the Three Kingdoms Ⅹ with Power Up Kit" is an expanded version of "Romance of the Three Kingdoms Ⅹ," which was released in 2004 as the 10th game in the series. In this release, the all-officer playable advances. Romance of the Three Kingdoms X with Power Up Kit is a turn-based tactics, wargame and immersive sim game developed and published by KOEI TECMO GAMES CO. and LTD.. Released on December 05th 2017 has received 647 reviews of which 534 were positive and 113 were negative resulting in a rating of 7.8 out of 10. The game currently holds the #4 spot among the most played diplomacy games.
7.8
534
113
38
players
5. Romance of the Three Kingdoms XII with Power Up Kit
"Romance of the Three Kingdoms 12 with Power Up Kit" is an expanded version of "Romance of the Three Kingdoms 12," which was released in 2012 as the 12th game in the series. The stage is set. Create the story. Romance of the Three Kingdoms XII with Power Up Kit is a turn-based tactics, wargame and immersive sim game developed and published by KOEI TECMO GAMES CO. and LTD.. Released on January 16th 2018 has received 399 reviews of which 295 were positive and 104 were negative resulting in a rating of 7 out of 10. The game currently holds the #5 spot among the most played diplomacy games.
7
295
104
27
players
6. A Game of Thrones: The Board Game - Digital Edition
A Game of Thrones: The Board Game – Digital Edition is the digital adaptation of the top-selling strategy board game from Fantasy Flight Games. A Game of Thrones: The Board Game - Digital Edition is a strategy, board game and social deduction game developed by Dire Wolf and published by Twin Sails Interactive. Released on October 06th 2020 has received 1,792 reviews of which 1,257 were positive and 535 were negative resulting in a rating of 6.8 out of 10. The game currently holds the #6 spot among the most played diplomacy games.
6.8
1,257
535
23
players
7. Romance of the Three Kingdoms Maker
"Romance of the Three Kingdoms Maker" celebrates the 30th anniversary of the "Romance of the Three Kingdoms" series. It has been realized through a collaboration between the creators of the "Romance of the Three Kingdoms" series, Koei Tecmo Games, and the creators of the "TSUKURU" series, KADOKAWA. Romance of the Three Kingdoms Maker is a turn-based tactics, wargame and immersive sim game developed and published by KOEI TECMO GAMES CO. and LTD.. Released on December 09th 2015 has received 323 reviews of which 215 were positive and 108 were negative resulting in a rating of 6.4 out of 10. The game currently holds the #7 spot among the most played diplomacy games.
6.4
215
108
8
players
8. Power & Revolution 2020 Edition
The new version of Geopolitical Simulator 4, the ultrarealistic simulator of today's world where you play as the head of state or as the opposition! Stop the spread of the Covid-19 pandemic and restart the economy, participate in the US elections or engage in lightning wars with new 2020 scenarios. Power & Revolution 2020 Edition is a simulation, strategy and diplomacy game developed and published by Eversim. Released on September 17th 2020 has received 839 reviews of which 523 were positive and 316 were negative resulting in a rating of 6.1 out of 10. The game currently holds the #8 spot among the most played diplomacy games.
6.1
523
316
2
players
9. Realpolitiks
Become the leader of any contemporary country in this streamlined real-time grand strategy game. Use diplomacy, espionage, military and economic power to deal with other nations, while tackling issues such as terrorism, financial crises and medical epidemics, all in an effort to achieve global domination! Realpolitiks is a strategy, diplomacy and political sim game developed by Jujubee S.A. and published by Fulqrum Publishing. Released on February 16th 2017 has received 1,197 reviews of which 740 were positive and 457 were negative resulting in a rating of 6.0 out of 10. The game currently holds the #9 spot among the most played diplomacy games.
6.0
740
457
2
players
10. The Life and Suffering of Sir Brante — Chapter 1&2
A narrative-driven hardcore RPG set in a gritty world where the gods are real. Set out on a challenging lifetime journey, where every choice you make has a price to pay and consequence to it. Will you become an inquisitor, a judge, or conspire against the old order? Dare to decide! The Life and Suffering of Sir Brante — Chapter 1&2 is a interactive fiction, choose your own adventure and diplomacy game developed by Sever and published by 101XP. Released on December 01st 2020 has received 2,030 reviews of which 1,957 were positive and 73 were negative resulting in an impressive rating of 9.2 out of 10. The game currently holds the #10 spot among the most played diplomacy games.
9.2
1,957
73
Best deals on diplomacy games on Steam
Discover fantastic savings with the best discounts on a variety of diplomacy games available on Steam right now, updated on April 16th 2025. Looking for even more deals? Use the search filters to explore a wider range of discounted diplomacy games.
1. Realpolitiks
Become the leader of any contemporary country in this streamlined real-time grand strategy game. Use diplomacy, espionage, military and economic power to deal with other nations, while tackling issues such as terrorism, financial crises and medical epidemics, all in an effort to achieve global domination! Realpolitiks is a strategy, diplomacy and political sim game developed by Jujubee S.A. and published by Fulqrum Publishing. Released on February 16th 2017 has received 1,197 reviews of which 740 were positive and 457 were negative resulting in a rating of 6.0 out of 10. Featuring a massive 93% discount, this game currently holds the #1 spot in the best deals for diplomacy category.
6.0
740
457
-93%
15.29€
1.07€
2. A Game of Thrones: The Board Game - Digital Edition
A Game of Thrones: The Board Game – Digital Edition is the digital adaptation of the top-selling strategy board game from Fantasy Flight Games. A Game of Thrones: The Board Game - Digital Edition is a strategy, board game and social deduction game developed by Dire Wolf and published by Twin Sails Interactive. Released on October 06th 2020 has received 1,792 reviews of which 1,257 were positive and 535 were negative resulting in a rating of 6.8 out of 10. Thanks to its incredible 85% discount, this game is now the #2 best deal in diplomacy games.
6.8
1,257
535
-85%
20.33€
3.05€
3. ROMANCE OF THE THREE KINGDOMS XIV
Triumph over the land, take charge of the fate of China! Conquer territories and fly your colors! ROMANCE OF THE THREE KINGDOMS XIV is a turn-based tactics, wargame and military game developed and published by KOEI TECMO GAMES CO. and LTD.. Released on January 15th 2020 has received 15,005 reviews of which 9,336 were positive and 5,669 were negative resulting in a rating of 6.2 out of 10. Thanks to its 37% discount, this game is now the #3 best deal in diplomacy games.
6.2
9,336
5,669
-37%
59.95€
37.77€
Free diplomacy games on Steam
Check out this fantastic list of free-to-play diplomacy games you can enjoy on Steam right now, updated on April 16th 2025. Looking for even more free titles? Use the search filters to explore a wider range of free to play diplomacy games.
1. The Life and Suffering of Sir Brante — Chapter 1&2
A narrative-driven hardcore RPG set in a gritty world where the gods are real. Set out on a challenging lifetime journey, where every choice you make has a price to pay and consequence to it. Will you become an inquisitor, a judge, or conspire against the old order? Dare to decide! The Life and Suffering of Sir Brante — Chapter 1&2 is a interactive fiction, choose your own adventure and diplomacy game developed by Sever and published by 101XP. Released on December 01st 2020 has received 2,030 reviews of which 1,957 were positive and 73 were negative resulting in an impressive rating of 9.2 out of 10. The game currently holds the #1 spot among the most played free diplomacy games on Steam.
9.2
1,957
73