Exanima Unique physics-based isometric dungeon crawler also featuring an arena career mode. Moddable. Really slow development cycle, though,

Severed Steel Futuristic 3D shooter with maybe the best movement system I’ve tried, with wall running, full 360 air movement, sliding and more. Weapons have only one magazine, so you’re constantly sourcing them from your enemies while blasting holes into the fully destructible levels. Very replayable.