So I ordered 2 Kingdom Hearts: Chain of Memories repro cartridges because they have 32MB of flash space on them, with a battery for saving the SRAM. I then ordered 2 Pokemon Ruby repo carts to rob them of their blood-red shells. I commissioned an Etsy seller for some custom sticker labels, and flashed the carts myself with the PC-modded version of DOOM and DOOM II. They have the uncensored red blood, PC textures, etc. So I essentially built by DOOM cartridges, and wanted to share them.