Just got around to checking out the cartridge. I dunno if ithe thickness of the PCB or the shell used but it's a REALLY tight fit compared to other gameboy carts I have. Tried it in both a GBA-SP and one of the Modretro Chromatics. The Chromatic took a lot of force to get it back out (and to even get it in all the way) since it's got a slot just like the OG Gameboy and Gameboy Color. I'm really nervous that this will actually damage the cart connector in my systems over time.