This is a simple model meant to hold a GameBoy cartridge (or GameBoy Color cartridge) in place in a standard audio cassette case. You may need to cut away the pegs on the case that would normally go into the spools on the audio cassette. This is designed so that the cartridge sits vertically in the case.
Printer: Prusa i3 MK3S+
Filament: PLA works fine, but you may want to add a brim to it to prevent warping at the edges.
Infill: 15%
The author hasn't provided the model origin yet.