No$GBA or "No Cash GBA" is a Gameboy Advance and Nintendo DS emulator. You can run pretty much all the Roms you can find for those systems with this emulator. Download the emulator, start the exe, select the Rom file and there you play. There is no installation, all you need to do is put the downloaded folder somewhere you want to keep it. Some newer Roms don't run well on cards but you can almost always get them to run on this emulator.
