I Am Quadrober!

A sandbox built around unstable movement. The character moves on all fours with full ragdoll physics, which means locomotion itself is the challenge — not getting somewhere, but staying upright on the way — and the open map exists to give that movement things to fall off. Games in this shape live or die on whether the physics are funny rather than merely broken, and these are on the right side of that line. The limbs respond consistently enough that you can develop a technique, and badly enough that the technique never quite works, which is the combination that makes the failures entertaining. There is no objective, nothing to lose and no progression worth mentioning; sessions are five to fifteen minutes of experimenting with a movement system that refuses to cooperate, which is exactly what it promises. There is a small amount of unlockable content, mostly cosmetic, and it is beside the point. What people come back for is the movement itself, which stays entertaining precisely because it never becomes reliable.