Lemma

"Lemma is a single-player Action game with a good story and delightful gameplay. It features immersive first-person parkour in a surreal, physics-driven voxel world where you can creatively build through movement, with four possible endings and time trial mode. The game includes a built-in level editor with Steam Workshop support and a soundtrack by Jack Menhorn and Ashton Morris. It has full controller support and a Discord community."