• Duo Planet Italy - Italian website for Duo gamers worldwide. Games exchange, guestbook, and Duo links.
• Jadeite's Turbo Grafx-16 Page - Dedicated to the Turbo Grafx-16, Turbo Duo.
• PC Engine DE - Information, tips, games, hardware, and software.
• PC Enginefx.com - Information and images of the NEC PC-FX covering the PC Engine, Playdia, Dreamcast, J-POP, and NeoGeo Pocket.
• Turbo Grafx Addict - Provides cover scans of both Japanese and United States release games.

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