Heat Signature is a pretty fun Sci-Fi stealth/combat game about infiltrating spaceships to carry out missions, liberate stations, and finish your personal goal.
Sunless Sea and Sunless Skies I enjoy for the theme and resource management of running a tight ship/train. It involves a lot of reading and several playthroughs to get in the flow of the game though.
Griftlands is a deck-building roguelike RPG I enjoy just because that's where I learned how to build a good card deck in the first place, followed by Dominion, which is the OG deck-building game of scoring as many victory points by building the most unbalanced stack ever.