Free Alternate History Games on Steam
Steam currently has 1,825 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 8/7/2025.
Looking for more? Explore other lists such as:
- Best alternate history games on Steam
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- Best alternate history Linux games on Steam
- Free Steam games
- Most played Steam games
- Best rated Steam games
1. STALCRAFT: X
STALCRAFT: X is the largest open-world online game in the Chernobyl Exclusion Zone. Explore the world full of mutants and anomalies alone or with friends — unforgettable emotions guaranteed.
STALCRAFT: X holds the #1 spot for "best free Alternate History game on Steam" with a Player Score of 74. Its score was calculated by analyzing a total of 80,013 reviews on Steam. This breaks down to a total of 59,642 positive reviews and 20,371 negative reviews — making it "Mostly Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play STALCRAFT: X on the Steam Deck (though some functionality may be limited).
2. 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 has achieved a Player Score of 68, placing it in the #2 spot for the best free Alternate History games. Its score was calculated by analyzing a total of 35,493 reviews on Steam. This breaks down to a total of 24,241 positive reviews and 11,252 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 |
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 2,632 reviews on Steam. This breaks down to a total of 2,468 positive reviews and 164 negative reviews — making it "Very Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Reverse: 1999 on the Steam Deck (though some functionality may be limited).
| Release Date | 10/8/2024 |
| Developer | BLUEPOCH GAMES CO., LIMITED |
| Publisher | BLUEPOCH GAMES CO., LIMITED |
| Steam App Id | 3092660 |
4. 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 #4 spot for the best free Alternate History games. Its score was calculated by analyzing a total of 3,300 reviews on Steam. This breaks down to a total of 2,240 positive reviews and 1,060 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 |
5. 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 #5 spot for the best free Alternate History games. Its score was calculated by analyzing a total of 26,580 reviews on Steam. This breaks down to a total of 17,582 positive reviews and 8,998 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 |
6. 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 #6 spot for the best free Alternate History games. Its score was calculated by analyzing a total of 5,418 reviews on Steam. This breaks down to a total of 4,124 positive reviews and 1,294 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 |
7. 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 #7 spot for the best free Alternate History games. Its score was calculated by analyzing a total of 3,977 reviews on Steam. This breaks down to a total of 2,961 positive reviews and 1,016 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 |
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 5,932 reviews on Steam. This breaks down to a total of 4,239 positive reviews and 1,693 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. Honkai Impact 3rd
Honkai Impact 3rd - Ultimate anime action made real! HD cel-shading, infinite combos, explosive feedback... Experience next-gen real-time action! An original tale told across media, immersive stage events, star-studded voice cast... Become part of the legend!
Honkai Impact 3rd has achieved a Player Score of 71, placing it in the #9 spot for the best free Alternate History games. Its score was calculated by analyzing a total of 9,774 reviews on Steam. This breaks down to a total of 7,118 positive reviews and 2,656 negative reviews — making it "Mostly Positive" on Steam.
It can be played and ran on Windows systems. At the moment, it is not possible to play or run Honkai Impact 3rd on the Steam Deck.
| Release Date | 10/21/2021 |
| Developers | |
| Publishers | |
| Steam App Id | 1671200 |
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 220 reviews on Steam. This breaks down to a total of 143 positive reviews and 77 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 | ||||
|---|---|---|---|---|---|---|
| 3,227 | 12/9/2022 | 74 | Free | Steam Charts | |
| 1,984 | 4/6/2020 | 68 | Free | Steam Charts | |
| 1,859 | 10/8/2024 | 90 | Free | Steam Charts | |
| 466 | 7/19/2024 | 66 | Free | Steam Charts | |
| 464 | 11/27/2019 | 65 | Free | Steam Charts | |
| 434 | 3/15/2018 | 74 | Free | Steam Charts | |
| 222 | 7/16/2019 | 72 | Free | Steam Charts | |
| 217 | 10/21/2017 | 70 | Free | Steam Charts | |
| 123 | 10/21/2021 | 71 | Free | Steam Charts | |
| 94 | 5/30/2023 | 62 | Free | Steam Charts | |
 | 94 | 10/22/2024 | 50 | Free | Steam Charts | |
 | 77 | 11/17/2017 | 64 | Free | Steam Charts | |
 | 54 | 9/18/2024 | 47 | Free | Steam Charts | |
 | 41 | 5/20/2021 | 62 | Free | Steam Charts | |
 | 37 | 3/30/2024 | 70 | Free | Steam Charts | |
 | 37 | 4/30/2018 | 79 | Free | Steam Charts | |
 | 36 | 5/26/2022 | 54 | Free | Steam Charts | |
 | 25 | 8/24/2022 | 66 | Free | Steam Charts | |
 | 19 | 3/9/2025 | 73 | Free | Steam Charts | |
 | 18 | 6/10/2025 | 62 | 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, August 7). Steam Store. Steam Store.
- Valve Corporation. (2025, August 7). STALCRAFT: X on Steam. Steam Store.
- Valve Corporation. (2025, August 7). Conqueror's Blade on Steam. Steam Store.
- Valve Corporation. (2025, August 7). Reverse: 1999 on Steam. Steam Store.
- Valve Corporation. (2025, August 6). Metal Slug: Awakening on Steam. Steam Store.
- Valve Corporation. (2025, August 4). Stay Out on Steam. Steam Store.
- Valve Corporation. (2025, July 8). SUPREMACY: WORLD WAR 3 on Steam. Steam Store.
- Valve Corporation. (2025, June 26). Supremacy: 1914 on Steam. Steam Store.
- Valve Corporation. (2025, June 26). Supremacy: Call of War 1942 on Steam. Steam Store.
- Valve Corporation. (2025, August 1). Honkai Impact 3rd on Steam. Steam Store.
- Valve Corporation. (2025, August 6). Kingdom Heroes M on Steam. Steam Store.