Free 4X Games on Steam
Steam currently has 758 4X 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 4X game rankings were last updated on 8/19/2025.
Looking for more? Explore other lists such as:
- Best 4x games on Steam
- Best 4x Steam Deck games
- Best 4x Steam games for Mac OS
- Best 4x Linux games on Steam
- Free Steam games
- Most played Steam games
- Best rated Steam games
1. Doomsday: Last Survivors
New tower defense gameplay! The apocalypse has come, and zombies are running amok. As the leader of the survivors, collect and use resources to defend their last shelter!
Doomsday: Last Survivors holds the #1 spot for "best free 4X game on Steam" with a Player Score of 64. Its score was calculated by analyzing a total of 695 reviews on Steam. This breaks down to a total of 463 positive reviews and 232 negative reviews — making it "Mixed" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play Doomsday: Last Survivors on the Steam Deck (though some functionality may be limited).
| Release Date | 6/26/2023 |
| Developer | IGG SINGAPORE PTE. LTD. |
| Publisher | IGG SINGAPORE PTE. LTD. |
| Steam App Id | 2439510 |
2. Viking Rise
Race against other players to explore Valhalla and conquer Midgard!
Viking Rise has achieved a Player Score of 69, placing it in the #2 spot for the best free 4X games. Its score was calculated by analyzing a total of 654 reviews on Steam. This breaks down to a total of 474 positive reviews and 180 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 Viking Rise on the Steam Deck.
| Release Date | 5/22/2024 |
| Developer | IGG SINGAPORE PTE. LTD. |
| Publisher | IGG SINGAPORE PTE. LTD. |
| Steam App Id | 2819520 |
3. Cividle
CivIdle is an idle/incremental game that allows you to lead your own civilization through thousands of years from ancient times to the modern era. Expand your territory, explore a vast tech tree, build various wonders, and trade with global players: empire must grow and numbers must go up!
Cividle has achieved a Player Score of 72, placing it in the #3 spot for the best free 4X games. Its score was calculated by analyzing a total of 680 reviews on Steam. This breaks down to a total of 514 positive reviews and 166 negative reviews — making it "Mostly Positive" on Steam.
It can be played and ran on Windows, Mac, and Linux systems. At the moment, it is possible to play Cividle on the Steam Deck (though some functionality may be limited).
| Release Date | 2/16/2024 |
| Franchise | Fish Pond Studio |
| Developers | |
| Publisher | Fish Pond Studio |
| Steam App Id | 2181940 |
4. Infinity Kingdom
Conquer the city, discover the Infinity! Infinity Kingdom is a cartoon-style mmo strategy game. As a resourceful lord, you must defend the land of Norheim against the evil gnomes while protecting yourself from other invading players!
Infinity Kingdom has achieved a Player Score of 58, placing it in the #4 spot for the best free 4X games. Its score was calculated by analyzing a total of 812 reviews on Steam. This breaks down to a total of 483 positive reviews and 329 negative reviews — making it "Mixed" on Steam.
It 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.
| Release Date | 7/2/2021 |
| Developer | YOUZU (SINGAPORE) PTE. LTD. |
| Publisher | YOUZU (SINGAPORE) PTE. LTD. |
| Steam App Id | 1573360 |
5. State of Survival
Survive the Zombies War in this RPG game of Apocalypse and Survival
State of Survival has achieved a Player Score of 56, placing it in the #5 spot for the best free 4X games. Its score was calculated by analyzing a total of 418 reviews on Steam. This breaks down to a total of 237 positive reviews and 181 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 State of Survival on the Steam Deck.
| Release Date | 8/2/2023 |
| Developer | FunPlus International AG |
| Publisher | FunPlus International AG |
| Steam App Id | 2485460 |
6. Pixel Starships
Pixel Starships is an FTL-style online sci-fi strategy builder and management game with a competitive PVP tournament. Set in the retro galaxy, your role is to explore space, meet aliens, and develop your ship, crew and AI. The game contains deep strategic and 4x elements. PSS is community-driven.
Pixel Starships has achieved a Player Score of 71, placing it in the #6 spot for the best free 4X games. Its score was calculated by analyzing a total of 2,774 reviews on Steam. This breaks down to a total of 2,037 positive reviews and 737 negative reviews — making it "Mostly Positive" on Steam.
It 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.
7. War Planet Online: Global Conquest
Build your army, dominate your region and lead your alliance to conquer the globe!
War Planet Online: Global Conquest has achieved a Player Score of 62, placing it in the #7 spot for the best free 4X games. Its score was calculated by analyzing a total of 926 reviews on Steam. This breaks down to a total of 589 positive reviews and 337 negative reviews — making it "Mixed" on Steam.
It can be played and ran on Windows systems. At the moment, it is possible to play War Planet Online: Global Conquest on the Steam Deck (though some functionality may be limited).
8. 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 51, placing it in the #8 spot for the best free 4X games. Its score was calculated by analyzing a total of 137 reviews on Steam. This breaks down to a total of 70 positive reviews and 67 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 |
9. Hades' Star
A unique space strategy game where thousands of players participate in one shared galaxy.
Hades' Star has achieved a Player Score of 71, placing it in the #9 spot for the best free 4X games. Its score was calculated by analyzing a total of 2,597 reviews on Steam. This breaks down to a total of 1,887 positive reviews and 710 negative reviews — making it "Mostly Positive" on Steam.
It 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.
| Release Date | 2/27/2019 |
| Developer | Parallel Space Inc |
| Publisher | Parallel Space Inc |
| Steam App Id | 755800 |
10. Nova Empire
Build up a Space Empire and establish control of the Galaxy and the Universe! Nova Empire is a multiplayer space game in which the aim is to build your empire and conquer the galaxy in epic space battles against your rivals with other allies worldwide!
Nova Empire has achieved a Player Score of 54, placing it in the #10 spot for the best free 4X games. Its score was calculated by analyzing a total of 261 reviews on Steam. This breaks down to a total of 143 positive reviews and 118 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 | 5/26/2022 |
| Developer | Gamebear Tech |
| Publisher | Gamebear Tech |
| Steam App Id | 1962770 |
More Free 4X Games
Explore even more rankings for the 69 best free 4X games available on Steam.
| Image | Name | Actions | ||||
|---|---|---|---|---|---|---|
| 476 | 6/26/2023 | 64 | Free | Steam Charts | |
| 472 | 5/22/2024 | 69 | Free | Steam Charts | |
| 448 | 2/16/2024 | 72 | Free | Steam Charts | |
| 311 | 7/2/2021 | 58 | Free | Steam Charts | |
| 195 | 8/2/2023 | 56 | Free | Steam Charts | |
| 194 | 5/23/2023 | 71 | Free | Steam Charts | |
| 175 | 12/19/2017 | 62 | Free | Steam Charts | |
| 172 | 10/22/2024 | 51 | Free | Steam Charts | |
| 124 | 2/27/2019 | 71 | Free | Steam Charts | |
| 44 | 5/26/2022 | 54 | Free | Steam Charts | |
 | 37 | 1/15/2025 | 70 | Free | Steam Charts | |
 | 31 | 4/6/2022 | 58 | Free | Steam Charts | |
 | 15 | 9/20/2023 | 47 | Free | Steam Charts | |
 | 14 | 8/12/2019 | 62 | Free | Steam Charts | |
 | 14 | 9/21/2023 | 55 | Free | Steam Charts | |
 | 9 | 8/8/2017 | 76 | Free | Steam Charts | |
 | 8 | 7/8/2022 | 64 | Free | Steam Charts | |
 | 8 | 1/11/2017 | 64 | Free | Steam Charts | |
 | 6 | 2/10/2022 | 44 | Free | Steam Charts | |
 | 6 | 7/25/2018 | 63 | 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 19). Steam Store. Steam Store.
- Valve Corporation. (2025, August 19). Doomsday: Last Survivors on Steam. Steam Store.
- Valve Corporation. (2025, August 15). Viking Rise on Steam. Steam Store.
- Valve Corporation. (2025, August 19). Cividle on Steam. Steam Store.
- Valve Corporation. (2025, August 11). Infinity Kingdom on Steam. Steam Store.
- Valve Corporation. (2025, July 29). State of Survival on Steam. Steam Store.
- Valve Corporation. (2025, August 19). Pixel Starships on Steam. Steam Store.
- Valve Corporation. (2025, August 19). War Planet Online: Global Conquest on Steam. Steam Store.
- Valve Corporation. (2025, August 12). Nova: Space Armada on Steam. Steam Store.
- Valve Corporation. (2025, June 16). Hades' Star on Steam. Steam Store.
- Valve Corporation. (2025, August 18). Nova Empire on Steam. Steam Store.