Good tech demo!
(Note for other mouse-and-keyboard people: the Interact keybinding seems to be F.)
Graphics look fine even on the lowest settings (and the lower settings do run faster), the physics feel pretty decent, I am not used to but appreciate that the player has a character model, the handling-objects systems seem to be good (although I'd like some ways to rotate an object, or pick up by one end to scoot around?), and (ROT13 for spoiler) V nccerpvngr gung fubbgvat bhg gur uvatrf frrzrq gb jbex sbe trggvat guebhtu gur ybpxrq qbbe gb gur onpx ebbz.