Emulators
I recommend the following:
- 3DS
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This is an unofficial distribution, VirusTotal results:
- DS
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melonDS looks promising, but the current requirement for an original BIOS/firmware prevents me from recommending it at this point. Apparently native ones are in the works. - Game Boy Advance / Game Boy / Game Boy Color
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Only supports local multiplayer. - Switch
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Unfortunately, I can’t help you with the required BIOS/firmware. But The Internet might… - Wii / GameCube
- WiiU