Check out this fantastic list of free-to-play moddable games you can enjoy on Steam right now, updated on May 19th 2026. Looking for even more free titles? Explore the complete list of the best free to play moddable games on Steam.
More Games
1. DFHack - Dwarf Fortress Modding Engine
Extensions for Dwarf Fortress, including bugfixes, interface improvements, automation agents, design blueprints, modding building blocks, and other tools. DFHack - Dwarf Fortress Modding Engine is a dwarf, simulation and software game. Released on April 13th 2023 has received 1,065 reviews of which 1,057 were positive and 8 were negative resulting in an impressive rating of 9.3 out of 10. The game has hit the top spot as the #1 most played moddable game, thanks to its 163 peak concurrent players over the last day.
9.3
1,057
8
163
players
More Moddable & Related Games
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