 The game was developed on an in @-@ house 3D game engine under construction for multiple years . Each character is made of over 7000 polygons and 55 bones , making for players with facial expressions , over 800 animations , and a capacity to blink . Character faces can additionally express emotions like happiness or anger , and feelings of pain . The move to Xbox led to greater variation in the team personalities . The artists drew many options for each team and the developers chose from the lot . Deathrow was designed for the Action camera view , but Sports view was introduced to expand the game 's appeal . 
