Rag Doll Kung Fu is a mouse-driven fighting game where the fighters are completely and totally incapable of moving at all without the player's aid. That means you're not just going to press a key to walk in a direction; you quite literally must pick up one foot after the other to make a character walk, or rather just drag them by the hand.
Combining these movements with a ragdoll (duh) physics engine and a little bit of chi power, fighters battle in a dramatic struggle to awkwardly yet gracefully beat each other into oblivion. Or they could just play soccer, or one of several other physics-based minigames.
The single player portion includes about 20 minutes of FMV cutscenes.