You can play almost all Super Nintendo Entertainment System (SNES) in one cartridge using SD2SNES Everdrive. The exception only falls for games which require extra computing power from the original cartridge like Star Fox. But most games can be played in this SD2NES Everdrive.
If you just started to collect all SNES games on eBay, it will cost you a lot of money. With Everdrive, you can load any SNES game images stored in the SD card. The money you saved can be used to get the original SNES console in good condition.
Another SD2NES Everdrive capability is the ability to play any unreleased or homebrew games. I believe you can also create your own game and load it inside the console.