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GBARunner2 is a plugin that lets you run Gameboy Advance games inside TM++. Follow along with the instructions on the GitHub link to install. This should also let you play Gamboy and Gameboy Color games as well.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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GodMode9i
GodMode9i Explorer - A full access file browser for the Nintendo DS and DSi consoles :godmode:
GodMode9i lets you dump saves from cartridges, create rims from cartridges, restore saves to cartridges, and more.
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TwilightMenu++ is an application for the DS&DSLite (via the r4 flashcart) or the DSi/3DS (via CFW). When opened, it looks and functions like the DSi menu. It allows you to access and play Roms via a prettier interface. This should let you run NDS, NES, and SNES games without any additional plugins.