| © 1988 Konami, Inc.
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| © 1988 Infocom, Inc.
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| © 1988 ShareData, Inc.
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| © 1988 subLOGIC
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| © 1988 Velocity Inc.
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| © 1988 Velocity
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| © 1988 Rainbird Software
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| © 1988 Electronic Arts Inc
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| © 1988 Electronic Arts, Inc.
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| © 1988 Scott M. Leventhal
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| © 1988 Infocom, Inc.
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| © 1988 Chip
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| © 1988 Thunder Mountain
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| © 1988 Avalon Interactive
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| © 1988 Proein S.A.
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| © 1988 Anco Software Ltd.
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| © 1988 Coktel Vision
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| © 1988 Peterson Computer Company
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| © 1988 Unknown
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| © 1988 Electronic Arts, Inc.
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| © 1988 Sierra Online
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| © 1988 Sierra On-Line, Inc.
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| © 1988 Sierra On-Line, Inc.
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| © 1988 Softdisk Publishing
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| © 1988 Mastertronic Group Ltd.
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| © 1988 J.A.M. Kleijn Rotterdam
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| © 1988 K. Small
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| © 1988 Epyx, Inc.
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| © 1988 Infocom, Inc.
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| © 1988 Activision Publishing Inc
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| © 1988 Activision Publishing, Inc.
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| © 1988 Gary Wilkinson
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| © 1988 Rainbird Software
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| © 1988 Avalon Interactive
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| © 1988 Infogrames
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| © 1988 Software Toolworks, Inc., The
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| © 1988 Software Toolworks The
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| © 1988 Softdisk Publishing
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| © 1988 Opera Soft
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| © 1988 Data East Corporation
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| © 1988 Softdisk Publishing
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| © 1988 Pinnacle Software
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| © 1988 SSG Strategic Studies Group Pty Ltd.
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| © 1988 U.S. Gold Ltd.
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| © 1988 Silmarils
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