Im looking for a game i played about 15 years ago, but its highly likely that its older. Very simple looking 3d shooter where you played as a small yellow chicken, there were no enemies as far as i remember, point of the game was knocking of boxes with bullets, everything outside of chicked locked like checkered notebook pattern. i belive while you had unlimited ammo, there was a limited number of shots each box could take. I think the boxes changed color after being shot indicating "clearing" them.