Best Diplomacy Games on Steam
Steam currently has 621 Diplomacy games available to download and play. Explore our list of the best picks ranked by Player Score. Our Player Score rankings are calculated directly from reviews left on the Steam store and will be updated in real-time as more players leave their feedback. Diplomacy game rankings were last updated on 3/30/2026.
Looking for more? Explore other lists such as:
- Free diplomacy games on Steam
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1. Sid Meier's Civilization® V
Create, discover, and download new player-created maps, scenarios, interfaces, and more!
Sid Meier's Civilization® V holds the #1 spot for "best Diplomacy game on Steam" with a Player Score of 94. Its score was calculated by analyzing a total of 208,827 reviews on Steam. This breaks down to a total of 199,603 positive reviews and 9,224 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $29.99 to play and can be played and ran on Windows, Mac, and Linux systems. At the moment, it is possible to play Sid Meier's Civilization® V on the Steam Deck (though some functionality may be limited).
| Steam Price | $29.99 |
| Release Date | 9/21/2010 |
| Franchise | Civilization Franchise |
| Developers | |
| Publishers | |
| Steam App Id | 8930 |
2. Ages of Conflict: World War Simulator
Ages of Conflict is a versatile Map Simulation game where you create and observe custom AI nations battle it out across an infinite number of worlds. Paint beautiful maps and scenarios, and command nations to change history into your liking!
Ages of Conflict: World War Simulator has achieved a Player Score of 93, placing it in the #2 spot for the best Diplomacy games. Its score was calculated by analyzing a total of 7,424 reviews on Steam. This breaks down to a total of 7,141 positive reviews and 283 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $6.99 to play and can be played and ran on Windows, Mac, and Linux systems. At the moment, it is possible to play Ages of Conflict: World War Simulator on the Steam Deck (though some functionality may be limited).
| Steam Price | $6.99 |
| Release Date | 2/17/2023 |
| Developer | JoySpark Games |
| Publisher | JoySpark Games |
| Steam App Id | 2186320 |
3. Against the Storm
A dark fantasy city builder where you must rebuild civilization in the face of apocalyptic rains. As the Queen’s Viceroy, lead humans, beavers, lizards, foxes, and harpies to reclaim the wilderness and secure a future for civilization's last survivors.
Against the Storm has achieved a Player Score of 93, placing it in the #3 spot for the best Diplomacy games. Its score was calculated by analyzing a total of 35,541 reviews on Steam. This breaks down to a total of 33,659 positive reviews and 1,882 negative reviews — making it "Very Positive" on Steam.
It is priced at $29.99 to play and can be played and ran on Windows systems. Valve has also verified it as playable on the Steam Deck and will run well.
| Steam Price | $29.99 |
| Release Date | 12/8/2023 |
| Franchise | Hooded Horse |
| Developer | Eremite Games |
| Publisher | Hooded Horse |
| Steam App Id | 1336490 |
4. Empires of the Undergrowth
Command swarms of warriors at an unprecedented scale of warfare in this blend of RTS and base-building. Lead ant colonies against the many fearsome threats of the insect world, while building intricate nests, developing pheromone-based tactics, and evolving to meet growing dangers.
Empires of the Undergrowth has achieved a Player Score of 92, placing it in the #4 spot for the best Diplomacy games. Its score was calculated by analyzing a total of 17,370 reviews on Steam. This breaks down to a total of 16,413 positive reviews and 957 negative reviews — making it "Very Positive" on Steam.
It is priced at $29.99 to play and can be played and ran on both Windows and Mac systems. At the moment, it is possible to play Empires of the Undergrowth on the Steam Deck (though some functionality may be limited).
| Steam Price | $29.99 |
| Release Date | 6/7/2024 |
| Franchise | Hooded Horse |
| Developer | Slug Disco |
| Publishers | |
| Steam App Id | 463530 |
5. 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 has achieved a Player Score of 92, placing it in the #5 spot for the best Diplomacy games. Its score was calculated by analyzing a total of 2,030 reviews on Steam. This breaks down to a total of 1,955 positive reviews and 75 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is completely free to play and can be played and ran on Windows systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.
6. Nova Roma
The glory of Rome is at your fingertips in this city-building game where you must appease the gods, enact laws, and develop complex supply chains to meet the needs of your citizens.
Nova Roma has achieved a Player Score of 91, placing it in the #6 spot for the best Diplomacy games. Its score was calculated by analyzing a total of 970 reviews on Steam. This breaks down to a total of 942 positive reviews and 28 negative reviews — making it "Overwhelmingly Positive" on Steam.
It is priced at $23.99 to play and can be played and ran on both Windows and Mac systems. At the moment, it is possible to play Nova Roma on the Steam Deck (though some functionality may be limited).
| Steam Price | $23.99 |
| Release Date | 3/26/2026 |
| Franchise | Lion Shield Studios |
| Developer | Lion Shield |
| Publisher | Hooded Horse |
| Steam App Id | 2426530 |
7. 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 has achieved a Player Score of 91, placing it in the #7 spot for the best Diplomacy games. Its score was calculated by analyzing a total of 16,249 reviews on Steam. This breaks down to a total of 15,139 positive reviews and 1,110 negative reviews — making it "Very Positive" on Steam.
It is priced at $19.99 to play and can be played and ran on Windows systems. At the moment, it is not possible to play or run Sins of a Solar Empire®: Rebellion on the Steam Deck.
| Steam Price | $19.99 |
| Release Date | 6/12/2012 |
| Developers | |
| Publisher | Stardock Entertainment |
| Steam App Id | 204880 |
8. The Battle of Polytopia
Welcome to the unique, turn-based strategy game set in the strange, flat world of the Square. Lead one of 16 distinct civilizations to victory by expanding your empire, researching technologies, and ultimately become ruler of the world! Play in single-player or multiplayer mode for up to 16 players.
The Battle of Polytopia has achieved a Player Score of 91, placing it in the #8 spot for the best Diplomacy games. Its score was calculated by analyzing a total of 5,743 reviews on Steam. This breaks down to a total of 5,397 positive reviews and 346 negative reviews — making it "Very Positive" on Steam.
It is priced at $14.99 to play and can be played and ran on Windows, Mac, and Linux systems. Valve has also verified it as playable on the Steam Deck and will run well.
| Steam Price | $14.99 |
| Release Date | 8/4/2020 |
| Developer | Midjiwan AB |
| Publisher | Midjiwan AB |
| Steam App Id | 874390 |
9. Politics The Game
Become a parliamentarian, create a powerful party, and lead it to victory in this humorous adventure game. Manage your popularity and dignity, use unique powers, and navigate a storyline inspired by current events.
Politics The Game has achieved a Player Score of 91, placing it in the #9 spot for the best Diplomacy games. Its score was calculated by analyzing a total of 2,194 reviews on Steam. This breaks down to a total of 2,083 positive reviews and 111 negative reviews — making it "Very Positive" on Steam.
It is priced at $7.89 to play and can be played and ran on both Windows and Mac systems. Valve has also verified it as playable on the Steam Deck and will run well.
| Steam Price | $7.89 |
| Release Date | 10/22/2025 |
| Franchise | SimplicityGames |
| Developer | Simplicity Games |
| Publisher | Simplicity Games |
| Steam App Id | 2999060 |
10. Total War: SHOGUN 2
Total War: SHOGUN 2 is the perfect mix of real-time and turn-based strategy gaming for newcomers and veterans alike.
Total War: SHOGUN 2 has achieved a Player Score of 90, placing it in the #10 spot for the best Diplomacy games. Its score was calculated by analyzing a total of 66,429 reviews on Steam. This breaks down to a total of 60,962 positive reviews and 5,467 negative reviews — making it "Very Positive" on Steam.
It is priced at $29.99 to play and can be played and ran on Windows, Mac, and Linux systems. At the moment, it is possible to play Total War: SHOGUN 2 on the Steam Deck (though some functionality may be limited).
| Steam Price | $29.99 |
| Release Date | 3/15/2011 |
| Developers | |
| Publishers | |
| Steam App Id | 34330 |
More Diplomacy Games
Explore even more rankings for the 100 best Diplomacy games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 19,421 | 9/21/2010 | 94 | $29.99 | Steam Charts | |
| 481 | 2/17/2023 | 93 | $6.99 | Steam Charts | |
| 1,992 | 12/8/2023 | 93 | $29.99 | Steam Charts | |
| 893 | 6/7/2024 | 92 | $29.99 | Steam Charts | |
| 1 | 12/1/2020 | 92 | Free | Steam Charts | |
| 1,716 | 3/26/2026 | 91 | $23.99 | Steam Charts | |
| 345 | 6/12/2012 | 91 | $19.99 | Steam Charts | |
| 232 | 8/4/2020 | 91 | $14.99 | Steam Charts | |
| 25 | 10/22/2025 | 91 | $7.89 | Steam Charts | |
| 3,246 | 3/15/2011 | 90 | $29.99 | Steam Charts | |
 | 145 | 3/29/2021 | 90 | $19.99 | Steam Charts | |
 | 391 | 12/4/2020 | 90 | $19.99 | Steam Charts | |
 | 321 | 8/30/2010 | 90 | $19.99 | Steam Charts | |
 | 86 | 10/24/2025 | 90 | Free | Steam Charts | |
 | 1 | 5/31/2021 | 90 | $2.24 | Steam Charts | |
 | 59,339 | 6/6/2016 | 89 | $49.99 | Steam Charts | |
 | 4,004 | 6/20/2024 | 89 | $39.99 | Steam Charts | |
 | 1,666 | 2/14/2012 | 89 | Free | Steam Charts | |
 | 954 | 11/6/2025 | 89 | $29.99 | Steam Charts | |
 | 1,235 | 1/17/2018 | 89 | $39.99 | Steam Charts |
Soures & References
Steambase has best-in-class data powered directly by Steam, our data partners, and in-house experts. Reviews and rankings are enriched, analyzed, and updated in real-time to ensure we surface the most up-to-date insights. Learn more about the Steambase approach to data collection and our review methodology.
- Valve Corporation. (2026, March 30). Steam Store. Steam Store.
- Valve Corporation. (2026, March 30). Sid Meier's Civilization® V on Steam. Steam Store.
- Valve Corporation. (2026, April 3). Ages of Conflict: World War Simulator on Steam. Steam Store.
- Valve Corporation. (2026, April 4). Against the Storm on Steam. Steam Store.
- Valve Corporation. (2026, April 3). Empires of the Undergrowth on Steam. Steam Store.
- Valve Corporation. (2026, April 3). The Life and Suffering of Sir Brante — Chapter 1&2 on Steam. Steam Store.
- Valve Corporation. (2026, April 5). Nova Roma on Steam. Steam Store.
- Valve Corporation. (2026, March 26). Sins of a Solar Empire®: Rebellion on Steam. Steam Store.
- Valve Corporation. (2026, April 2). The Battle of Polytopia on Steam. Steam Store.
- Valve Corporation. (2026, April 3). Politics The Game on Steam. Steam Store.
- Valve Corporation. (2026, April 3). Total War: SHOGUN 2 on Steam. Steam Store.