but it's still very much indoor with only 1-3 monsters onscreen at the same timehttp://www.unrealtechnology.com/screens/TerrainShot.jpgThe monsters on screen at a time is down to the games that use it and how many polys they wanna share between onscreen models. It's not really something you can quantify as a limitation. Besides, all of the character models shown are low poly with normal maps for the detail.