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Genesis, Saturn failed
But Sega Saturn had 18X games in Japan.
Sega Saturn Magazine ended in 1998.
Sega Saturn Magazine was created in 1994.
You only play Dreamcast games like Sonic Adventure on your Sega Dreamcast instead of Sega Saturn.
No, you cannot !
Directly from the Sega Saturn manual:
"You cannot use Genesis, Sega CD, or Genesis 32X games or peripheral equipment with your Sega Saturn."