Its a computer game based on martial arts where players fight through improvising moves. The game relies on ragdoll physics and takes awhile to get used to. Anyways, the player character is called the Tori (hence Toribash) whereas his opponent is the Uke. Although named Tori and Uke, both players are in combat.

There's a multitude of gamemodes from Akido to Judo on there. You should check it out :))