| ©1984 IBM
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| ©1991 Freeware
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| ©1986 Jerry Schonewille
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| ©1989 R.J.M. Miltenburg
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| ©1982 Insoft
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| ©198x Unknown
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| ©2009 Apogee Software Productions
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| ©1988 J. Doug McDonald
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| ©1990 Krisalis Software Ltd
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| ©1987 Melody Hall Publishing Corp.
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| ©1989 Access Software, Inc.
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| ©1989 Novotrade
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| ©1989 Melbourne House
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| ©1992 Casey Butler
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| ©1986 Epyx, Inc.
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| ©1986 Epyx, Inc.
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| ©1989 Robert L. Lloyd
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| ©1996 Team 17
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| ©1988 Mastertronic, Inc.
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| ©1986 Electronic Arts, Inc.
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| ©1993 Electronic Arts Inc
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| ©1989 Novotrade
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| ©1990 Origin Systems Inc
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| ©1982 Mark D. Miller
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| ©1983 Theodore W. Perkins
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| ©1986 J. Eichner
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| ©2006 Christian Knudsen
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| ©2006 Christian Knudsen
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| ©2001 Arnab Bose
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| ©1985 Deyan Rudev
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| ©2001 Joe Antoon
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| ©1988 Future Ideas Today, Inc.
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| ©1990 Readysoft Incorporated
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| ©1997 Telstar
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| ©1984 Keypunch Software, Inc.
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| ©2001 Bisqwit
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| ©1982 Unknown
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| ©1989 Wayne McWilliams
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| ©1995 Acclaim Entertainment Inc
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| ©1996 Acclaim
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| ©1995 Acclaim Entertainment, Inc.
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| ©1991 Softworld
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