Pretty sure everything is indie on itch.io but just in case you want something extra indie.
Suggest updated description
Games that can be played alone
Projects tagged with the following aliases will automatically show up on this page:
single-player
Explore games not in game jams on hold tagged Indie and Singleplayer on itch.io · Sell your games not in game jams on hold on itch.io to have them show up here.
Subscribe for game recommendations, clips, and more
