itch.io

Pretty sure everything is indie on itch.io but just in case you want something extra indie.

Games where the primary goal is keeping the player character alive under harsh circumstances such as dwindling resources or a hostile environment.

A type of game where the player builds defensive structures to stop waves of enemies from reaching and destroying their base. Towers can be equipped with many kinds of weapons, but generally are unable to move. Resources earned by defeating enemies allow for more towers to be built.

Unity is a game engine for 2D, 3D, AR and more