Wouter Van Oortmerssen (Aardappel)

Wouter Van Oortmerssen, also know by aliases "Aardappel,Aard. Is an mapper, modder, and game developer. In Doom He has done an considerable amount of contribution to the community, He was one of the original founders of the Freedoom project (an project that aims to create an freely distributable and open-source alternative to the original Doom.) He also created the WadC editor for Doom. Aardappel has also developed several modifications and maps for Quake modifications include Pan Quake and DMSP (Along with Fat Controller.) Aardappel's Quake maps can be accessed here

He also developed the first-person shooting games, Cube and its sequel Cube 2 both use an completely new engine with possibility to edit worlds real-time. The games in turn were inspired by old-school first-person shooters such as Doom and Quake.