Super Mario Bros – World 1-2
The first underground level, and the one most players remember for its shortcut. After a short walk on the surface Mario drops into a pipe, and the rest of the stage runs through blue brick tunnels with Goombas and Koopas in narrow corridors.
The shortcut is at the end. Where the ceiling opens up near the moving platforms, jump onto the row of bricks at the top and keep running along it instead of dropping down to the exit pipe. The corridor above leads to the Warp Zone: three pipes marked 2, 3 and 4. Pick one and you skip straight to that world.
If you would rather play everything in order, take the normal exit pipe on the right. Either way, keep an eye on the lifts: they move on fixed tracks and will carry you into the ceiling if you stand on them too long.
Overworld
1-2
Underground
1-3
Treetop / athletic
1-4
Castle
2-1
Overworld
2-2
Underwater
2-3
Bridge
2-4
Castle
3-1
Overworld
3-2
Overworld
3-3
Treetop / athletic
3-4
Castle
4-1
Overworld
4-2
Underground
4-3
Treetop / athletic
4-4
Castle
5-1
Overworld
5-2
Overworld
5-3
Treetop / athletic
5-4
Castle
6-1
Overworld
6-2
Overworld
6-3
Treetop / athletic
6-4
Castle
7-1
Overworld
7-2
Underwater
7-3
Bridge
7-4
Castle
8-1
Overworld
8-2
Overworld
8-3
Overworld
8-4
Castle
