Super Mario Bros.: The Lost Levels

Super Mario Bros.: The Lost Levels is a game released for Virtual Console, and is the official North American and European release of the original Japanese Super Mario Bros. 2.

Gameplay
It is identical to that of Super Mario Bros. in that the player controls Mario or Luigi as he travels through several different worlds, each with four levels apiece, jumping across platforms and over enemies in his journey to defeat Bowser and to rescue the Peach.

It now has the addition of Poison Mushrooms that can make Mario lose his powers or his life, and warp tunnels that can bring players back to previous levels. Another notable change is the difference in Mario and Luigi's physics; while Mario plays just like the original, Luigi can jump higher and has less traction. The game is considered more difficult to play than Super Mario Bros.