Check out this fantastic list of free-to-play action rts games you can enjoy on Steam right now, updated on May 13th 2026. Looking for even more free titles? Explore the complete list of the best free to play action rts games on Steam.
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1. World War Armies
World War Armies is the ultimate PvP real-time strategy game. Command advanced war machines and compete for free against other players worldwide. Revolutionary mechanics reduce downtime and focus on direct engagement with the enemy, you get to the fun parts of RTS faster. World War Armies is a rts, pvp and strategy game. Released on May 02nd 2024 has received 982 reviews of which 605 were positive and 377 were negative resulting in a rating of 6.0 out of 10. The game currently holds the #1 spot among the most played action rts games.
6.0
605
377
31
players
2. Crystal Clash
Crystal Clash is a mix of Lane Battles and Deckbuilding - with action-packed tug-of-war strategy, just like your favorite RTS mods from back in the day! :) Play 2v2 or co-op with a friend, or pair up with new allies and enemies! Collect cards, build your decks and have fun crushing your enemies! Crystal Clash is a action rts, tower defense and casual game. Released on January 14th 2022 has received 1,369 reviews of which 1,134 were positive and 235 were negative resulting in a rating of 7.9 out of 10. The game currently holds the #2 spot among the most played action rts games.
7.9
1,134
235
6
players
3. Crustacean Nations
🦀Crustacean Nations🦀 is a real-time strategy game about total crab warfare. Build a sprawling sand castle and amass huge armies to dominate the beach and become the one true crustacean nation! Crustacean Nations is a strategy, casual and action rts game. Released on August 19th 2022 has received 510 reviews of which 471 were positive and 39 were negative resulting in a rating of 8.6 out of 10. The game currently holds the #3 spot among the most played action rts games.
8.6
471
39
2
players
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