Custom RenPy interface and music. This makes your game unique from dozens with default GUI and without sound. I remember i was shocked with Demon Boy demo, this had not only best renders but custom GUI and great ambient - this made me feel this game developing with soul.
Playing little bits at a time of multiple games. Currently installed are Midnight Paradise, The Guardian, Summer Heat, Cosy Cafe (haven't started), Summer Scent, Summer's Gone (just realizing all the fkin summer games lol) Sassy Girl, My Best Deal, and Long Story Short (also havent started yet)