I highly recommend Projekt Passion, Realm Invader, Companion of Darkness, Unraveling August (even if there isn't much in it rn), and Goddess's Whim. Ooh and Between Humanity. Cause someone mentioned that down below.
Goddess's Whim, Projekt Passion (costs $10 for the full game but has a free demo,), and Companion of Darkness have the most content out of those in case you want something to kill a decent chunk of time with.