Super Mario Brothers 2

Super Mario Bros. 2 is a NES game. It is actually a remake of an old game called Doki Doki Panic.

The true Super Mario Bros. 2 was released in Japan, but Nintendo apparently decided it was too challenging for UK/US players, so it wasn't released in the UK or US. However, Nintendo was already working on Super Mario Bros. 3 and they hadn't released an SMB2 in the UK or US. They needed to make a game which was quick to make, so they took Doki Doki Panic, a game nobody in Japan really liked, and replaced all the characters with Mario characters and called it SMB2. Even though nobody in Japan liked it, when they replaced the characters with Mario characters everyone liked it.

The Japanese SMB2 was also released here as Super Mario: The Lost Levels. It was also released on Super Mario Bros. Deluxe as Super Mario Bros. for Super Players.