by Sierra On-Line, Inc., 2000
by Bullfrog Productions, Ltd., 1993
by Looking Glass Technologies, Inc., 1994
by Looking Glass Studios, Inc., 1999
by Simis Limited, 1998
by Distinctive Software, Inc., 1987
by Accolade, Inc., 1990
by Elite Systems Ltd., 1997
by Trilobyte, Inc., 1995
by Trilobyte, Inc., 1993
by Deadly Games, 1998
by Sierra On-Line, Inc., 1995
by LucasArts Entertainment Company LLC, 1997
by Distinctive Software, Inc., 1989
by Bethesda Softworks LLC, 1994
by Bethesda Softworks LLC, 1996
by Empire Interactive Entertainment, 1998
by Dynamix, Inc., 1993
by Jeff Tunnell Productions, 1994
by Coktel Vision, 1995
by Smoking Car Productions, Inc., 1997
by Pioneer Productions, 1995
by Pioneer Productions, 1996
by MECC, 1990
by MECC, 1992
