Red Faction features an game engine called Geo-Mod. It allows holes to be blasted into all manner of terrain including floors walls and ceilings. While limited to certain surfaces such as rock ice and concrete this nonetheless results in a more destructible environment where deviation from the level design is encouraged. Players are able to at multiple points create their own paths tunneling past obstacles and into new environments. Only heavy explosives such as missiles torpedoes grenades and plastique will allow the terrain destruction of this sort.