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Check out this fantastic list of free-to-play 4x games you can enjoy on Steam right now, updated on September 08th 2026. Looking for even more free titles? Explore the complete list of the best free to play 4x games on Steam.
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1. Doomsday: The Seven Deadly Sins
The legendary captain descends as hidden power engulfs the wasteland! The Seven Deadly Sins Collab is now live! Doomsday: The Seven Deadly Sins is a strategy, strategy rpg and massively multiplayer game. Released on June 25th 2023 has received 944 reviews of which 601 were positive and 343 were negative resulting in a rating of 6.2 out of 10. The game has hit the top spot as the #1 most played 4x game, thanks to its 500 peak concurrent players over the last day.
6.2
601
343
500
players
2. Viking Rise
Race against other players to explore Valhalla and conquer Midgard! Viking Rise is a strategy, rpg and 4x game. Released on May 21st 2024 has received 977 reviews of which 680 were positive and 297 were negative resulting in a rating of 6.7 out of 10. While seeing 446 players online at once in the last 24 hours, this game is currently ranked #2 among 4x games based on player count.
6.7
680
297
446
players
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 is a idler, base building and automation game. Released on December 04th 2025 has received 1,120 reviews of which 822 were positive and 298 were negative resulting in a rating of 7.1 out of 10. While seeing 333 players online at once in the last 24 hours, this game is currently ranked #3 among 4x games based on player count.
7.1
822
298
333
players
4. Nexus Legacy
Rebuild civilization from a single planet in Nexus Legacy, a persistent sci-fi 4X MMO. Colonize worlds, manage resources, research technologies, command fleets, forge alliances, and fight for control of a living galaxy. Nexus Legacy is a early access, strategy and 4x game. Released on June 05th 2026 has received 340 reviews of which 225 were positive and 115 were negative resulting in a rating of 6.3 out of 10. With 174 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played 4x games.
6.3
225
115
174
players
5. Demise of Nations
Demise of Nations is a 4X turn-based grand strategy wargame covering the rise of Rome till the fall of modern civilization. Demise of Nations is a strategy, indie and 4x game. Released on August 08th 2017 has received 523 reviews of which 423 were positive and 100 were negative resulting in a rating of 7.6 out of 10. The game currently holds the #5 spot among the most played 4x games.
7.6
423
100
1
players
6. Gods and Idols
Take the role of a newly ascended deity in Gods and Idols. Carve your place among the stars in an open, dynamic, and massive MMORTS universe. Command the powers of the cosmos, form alliances, and use your worshipers as instruments to further your goals. Gods and Idols is a 4x, god game and rts game. Released on December 12th 2016 has received 756 reviews of which 531 were positive and 225 were negative resulting in a rating of 6.8 out of 10. The game currently holds the #6 spot among the most played 4x games.
6.8
531
225
1
players
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