Up to five players can play at the same time and, as Stuart Andrews says in his review on Trusted Reviews, this is "the best 2D Mario game since the golden days of the SNES."
Almost all of the games you'll find online are classic Nintendo games from the NES, SNES and GameBoy eras.
Super Mario World came bundled with the SNES and has sold about 20 million copies.
It initially competed against the Sega Genesis and Super Nintendo Entertainment System (SNES), but later faced off against the much more popular Sony PlayStation.
Because it initially competed against the SNES and Genesis, it was not necessary to have huge storage capacities in the games, so the Jaguar ran primarly on cartridges up to 6MB in size.