Pretty sure everything is indie on itch.io but just in case you want something extra indie.
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Games that can be played by more than one player, either locally or online.
Science-fiction. Commonly including things like aliens, advanced technology, and settings of outer space or distant planets.
Projects tagged with the following aliases will automatically show up on this page:
sci-fi
Explore games tagged Indie, Multiplayer and Sci-fi on itch.io · Upload your games to itch.io to have them show up here.
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