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Almost every game I had for the gameboy took advantage of the SGB! I still have it today and it's very very useful for playing old games on the big screen back when we didn't know too much about roms and emu's of today. It's still useful today if you wanna play on the tv but mine just collects dust now.
I never knew Wario had SGB features. Got to check it out.
The Super Gameboy is probably the coolest piece of video game hardware in existence.