Pretty sure everything is indie on itch.io but just in case you want something extra indie.
A metroidvania is a game inspired by Metroid and Castlevania
It often involves exploration and gaining new abilities to access new areas or progress.
Explore games for Linux with an interactive tutorial tagged Indie and Metroidvania on itch.io · Upload your games for Linux with an interactive tutorial to itch.io to have them show up here.
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