First, and Likely Sole, Update
A small update all things considered, added more emulators, another ROM pack, and actually disabled donations this time. Please go donate to the original projects, and if possible, support Nintendo and Gamefreak. And to whoever donated the $2.20, rest assured that it will stay in itch's backlog to never be touched.
I do not currently plan to update this download again, if there's ever a need, I should have provided the resources needed to do so. I personally recommend using some kind of Game pad for emulation, but you can just use a keyboard if you want. Do also keep in mind that Switch, and even 3DS emulation can be somewhat resource intensive, do not expect those emulators to run on ancient machines.
I did not include, nor plan to add, any ROM packs for the 3DS or Switch due to the 1GB upload limit, and the fact that Nintendo is still touchy about Switch Emulation doesn't help.