id                          ( DOOM         )
Harold Ramis & Dan Ackroyd  ( GhostBusters )
Columbia Pictures           (      "       )
Velocity                    ( STRIFE       )
Shams Young                 ( DOOM City    )
3d realms                   ( Duke 3D      )
Raven                       ( Hexen        )
Banjo                       ( Hacx         )
Humilitia                   ( GB3D         )




Adam Shaw                   ( Many Levels  )