I think they said GoG provided technical support or something, right? I imagine there was a clause in whatever they did heavily encouraging releasing it on GoG. In any case, for me at least I much rather prefer it being on GoG than steam just for DRMs sake. I’ve transitioned to always buying on GoG first, rather than steam.
Night of the full moon is a good card roguelike. They’ve recently added modes that play like hearthstone and other card games too
Peglin is a good peggle spin off
Solitarica is a solitaire roguelike
Solomons keep/boneyard are fun dungeon crawler roguelikes
Pawnbarian is a chess roguelike