Free Alternate History Games on Steam
Steam currently has 1,805 Alternate History games available to download and play. Explore our list of the best free games ranked by popularity and ratings. Data for this list is calculated from reviews and player counts reported directly by Steam and will be updated in real-time. Free Alternate History game rankings were last updated on 7/18/2025.
Looking for more? Explore other lists such as:
- Best alternate history games on Steam
- Best alternate history Steam Deck games
- Best alternate history Steam games for Mac OS
- Best alternate history Linux games on Steam
- Free Steam games
- Most played Steam games
- Best rated Steam games
1. Conqueror's Blade
Conqueror's Blade gives you a chance to be a true warlord. Commanding medieval troops in epic 15 vs. 15 siege battles, conquering cities with allies in the open world or fighting against players from all over the world – it's you who make the choice.
Conqueror's Blade holds the #1 spot for "best free Alternate History game on Steam" with a Player Score of 68. Its score was calculated by analyzing a total of 34,867 reviews on Steam. This breaks down to a total of 23,832 positive reviews and 11,035 negative reviews — making it "Mixed" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Conqueror's Blade on the Steam Deck (though some functionality may be limited).
| Release Date | 4/6/2020 |
| Developer | Booming Tech |
| Publishers | |
| Steam App Id | 835570 |
2. Stay Out
Stay Out - is a MMORPG with shooter elements, based on spirit of “stalking” - an urban exploration, searching and exploring mysterious, abandoned and forgotten by humanity pieces of our planet.
Stay Out has achieved a Player Score of 65, placing it in the #2 spot for the best free Alternate History games. Its score was calculated by analyzing a total of 26,351 reviews on Steam. This breaks down to a total of 17,384 positive reviews and 8,967 negative reviews — making it "Mixed" on Steam.
It can be played and ran on Windows systems. At the moment, it is not possible to play or run Stay Out on the Steam Deck.
| Release Date | 11/27/2019 |
| Developer | MOBITECH LLC |
| Publisher | MOBITECH LLC |
| Steam App Id | 1180380 |
3. Reverse: 1999
Reverse: 1999 is a 20th Century Time-Travel Strategic RPG developed by Bluepoch. As the Timekeeper, the observer of eras, you will embark on a journey across time and space, from the Roaring '20s to the turn of the millennium, uncovering the truth about the "Storm" and the mystery of the year 1999.
Reverse: 1999 has achieved a Player Score of 90, placing it in the #3 spot for the best free Alternate History games. Its score was calculated by analyzing a total of 2,516 reviews on Steam. This breaks down to a total of 2,360 positive reviews and 156 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is not possible to play or run Reverse: 1999 on the Steam Deck.
| Release Date | 10/8/2024 |
| Developer | BLUEPOCH GAMES CO., LIMITED |
| Publisher | BLUEPOCH GAMES CO., LIMITED |
| Steam App Id | 3092660 |
4. SUPREMACY: WORLD WAR 3
This Long Term Strategy Game lets you take control of the armed forces of your nation. Become responsible for its military expansion, technological research and economic development. Form alliances and wage total war for global dominance on the battlefields of World War 3.
SUPREMACY: WORLD WAR 3 has achieved a Player Score of 74, placing it in the #4 spot for the best free Alternate History games. Its score was calculated by analyzing a total of 5,390 reviews on Steam. This breaks down to a total of 4,106 positive reviews and 1,284 negative reviews — making it "Mostly Positive" on Steam.
It can be played and ran on both Windows and Mac systems. At the moment, it is not possible to play or run SUPREMACY: WORLD WAR 3 on the Steam Deck.
| Release Date | 3/15/2018 |
| Developer | Dorado Games |
| Publisher | Dorado Games |
| Steam App Id | 784950 |
5. Treasure Hunters: Prologue
Treasure Hunters: Prologue is a free intense CO-OP treasure-hunting game set in mysterious dungeons filled with puzzles, platforms, and deadly creatures where your goal is to find and steal the most valuable treasures.
Treasure Hunters: Prologue has achieved a Player Score of 63, placing it in the #5 spot for the best free Alternate History games. Its score was calculated by analyzing a total of 24 reviews on Steam. This breaks down to a total of 17 positive reviews and 7 negative reviews — making it "Mostly Positive" on Steam.
It can be played and ran on Windows systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.
| Release Date | 7/17/2025 |
| Franchise | PlayWay S.A. |
| Developer | Biax |
| Publisher | PlayWay SA |
| Steam App Id | 3669530 |
6. Supremacy: 1914
Take over the control of one of the mighty nations during the times of World War 1 in the biggest WW1 strategy game of all time. Conquer provinces, forge alliances and build up your economy in real-time on persistent maps. Build experimental weapons of World War 1 and become the one true superpower!
Supremacy: 1914 has achieved a Player Score of 72, placing it in the #6 spot for the best free Alternate History games. Its score was calculated by analyzing a total of 3,953 reviews on Steam. This breaks down to a total of 2,945 positive reviews and 1,008 negative reviews — making it "Mostly Positive" on Steam.
It can be played and ran on both Windows and Mac systems. At the moment, it is not possible to play or run Supremacy: 1914 on the Steam Deck.
| Release Date | 7/16/2019 |
| Developer | Bytro Labs GmbH |
| Publisher | Bytro Labs GmbH |
| Steam App Id | 979920 |
7. Metal Slug: Awakening
Metal Slug: Awakening continues the classic gameplay loved by fans, with exciting new features like World Adventure, 3-player Team-up, and Roguelike challenges. Join forces with your friends online to take on powerful bosses anytime, anywhere!
Metal Slug: Awakening has achieved a Player Score of 66, placing it in the #7 spot for the best free Alternate History games. Its score was calculated by analyzing a total of 3,286 reviews on Steam. This breaks down to a total of 2,229 positive reviews and 1,057 negative reviews — making it "Mixed" on Steam.
It can be played and ran on Windows systems. At the moment, it is not possible to play or run Metal Slug: Awakening on the Steam Deck.
| Release Date | 7/19/2024 |
| Developer | Tencent |
| Publisher | HaoPlay Limited |
| Steam App Id | 2963870 |
8. Supremacy: Call of War 1942
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!
Supremacy: Call of War 1942 has achieved a Player Score of 70, placing it in the #8 spot for the best free Alternate History games. Its score was calculated by analyzing a total of 5,889 reviews on Steam. This breaks down to a total of 4,204 positive reviews and 1,685 negative reviews — making it "Mostly Positive" on Steam.
It can be played and ran on both Windows and Mac systems. At the moment, it is possible to play Supremacy: Call of War 1942 on the Steam Deck (though some functionality may be limited).
| Release Date | 10/21/2017 |
| Developer | Bytro Labs GmbH |
| Publisher | Bytro Labs GmbH |
| Steam App Id | 672680 |
9. Nova: Space Armada
An exceptional sci-fi strategy game based on space adventure as its core.
Nova: Space Armada has achieved a Player Score of 49, placing it in the #9 spot for the best free Alternate History games. Its score was calculated by analyzing a total of 120 reviews on Steam. This breaks down to a total of 59 positive reviews and 61 negative reviews — making it "Mixed" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Nova: Space Armada on the Steam Deck (though some functionality may be limited).
| Release Date | 10/22/2024 |
| Developer | STONE3 PTE. LTD. |
| Publisher | STONE3 PTE. LTD. |
| Steam App Id | 1108270 |
10. Kingdom Heroes M
歷經20年的感動，給你最原汁原味的《三國群英傳M》
Kingdom Heroes M has achieved a Player Score of 62, placing it in the #10 spot for the best free Alternate History games. Its score was calculated by analyzing a total of 219 reviews on Steam. This breaks down to a total of 143 positive reviews and 76 negative reviews — making it "Mixed" on Steam.
It can be played and ran on Windows systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.
| Release Date | 5/30/2023 |
| Franchise | USERJOY |
| Developer | USERJOY Technology Co.,Ltd. |
| Publisher | USERJOY Technology Co.,Ltd. |
| Steam App Id | 2321430 |
More Free Alternate History Games
Explore even more rankings for the 100 best free Alternate History games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 7,002 | 4/6/2020 | 68 | Free | Steam Charts | |
| 1,273 | 11/27/2019 | 65 | Free | Steam Charts | |
| 1,015 | 10/8/2024 | 90 | Free | Steam Charts | |
| 659 | 3/15/2018 | 74 | Free | Steam Charts | |
| 285 | 7/17/2025 | 63 | Free | Steam Charts | |
| 258 | 7/16/2019 | 72 | Free | Steam Charts | |
| 187 | 7/19/2024 | 66 | Free | Steam Charts | |
| 180 | 10/21/2017 | 70 | Free | Steam Charts | |
| 134 | 10/22/2024 | 49 | Free | Steam Charts | |
| 128 | 5/30/2023 | 62 | Free | Steam Charts | |
 | 110 | 10/21/2021 | 71 | Free | Steam Charts | |
 | 105 | 11/17/2017 | 64 | Free | Steam Charts | |
 | 88 | 9/18/2024 | 47 | Free | Steam Charts | |
 | 60 | 5/20/2021 | 62 | Free | Steam Charts | |
 | 49 | 5/26/2022 | 54 | Free | Steam Charts | |
 | 33 | 3/9/2025 | 75 | Free | Steam Charts | |
 | 33 | 1/10/2023 | 66 | Free | Steam Charts | |
 | 27 | 8/24/2022 | 66 | Free | Steam Charts | |
 | 22 | 6/19/2025 | 67 | Free | Steam Charts | |
 | 20 | 3/30/2024 | 70 | Free | Steam Charts |
Soures & References
Steambase has best-in-class data powered directly by Steam, our data partners, and in-house experts. Player counts 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. (2025, July 18). Steam Store. Steam Store.
- Valve Corporation. (2025, July 18). Conqueror's Blade on Steam. Steam Store.
- Valve Corporation. (2025, July 18). Stay Out on Steam. Steam Store.
- Valve Corporation. (2025, July 3). Reverse: 1999 on Steam. Steam Store.
- Valve Corporation. (2025, July 8). SUPREMACY: WORLD WAR 3 on Steam. Steam Store.
- Valve Corporation. (2025, July 18). Treasure Hunters: Prologue on Steam. Steam Store.
- Valve Corporation. (2025, June 26). Supremacy: 1914 on Steam. Steam Store.
- Valve Corporation. (2025, July 17). Metal Slug: Awakening on Steam. Steam Store.
- Valve Corporation. (2025, June 26). Supremacy: Call of War 1942 on Steam. Steam Store.
- Valve Corporation. (2025, July 10). Nova: Space Armada on Steam. Steam Store.
- Valve Corporation. (2025, June 26). Kingdom Heroes M on Steam. Steam Store.