Same old, same old....
Picture the scene: An evening in an office sometime in the early/mid 1990s. Four geeky types sit at screens distributed around the floor.
One of the geeky types looks at his screen running DOOM, sees someone peeking round a corner, selects the Rocket Launcher and hammers the fire button three times in quick succession.
From the other side of the floor there's a loud <CRASH> as a geek-laden wheelie chair impacts a wall sideways at near-relativistic velocity, spilling its contents onto the floor, to the accompaniment of a selection of coarse anglo-saxon terms indicating some personal injury.
Playing DOOM deathmatch while sat on wheeled chairs could be quite hazardous.