World 6 (NSMB)
From the Super Mario Wiki
Mario & Luigi, after defeating Petey Piranha, traveled on to World 6. It was a world in some mountain ruins, though some levels were in different terrain. It had 2 towers but no ghost houses. The castle, at the end, came after a level infested with Chain Chomps, Koopas and Warp Pipes.
The boss is Monty Tank, and he fires Bullet Bills at Mario or Luigi. He may pop out to throw a Bob-omb into the mix.
[edit] Enemies introduced
| The Worlds of New Super Mario Bros. |
|---|
| World 1 | World 2 | World 3 | World 4 | World 5 | World 6 | World 7 | World 8 |
| World 6 (NSMB) |
|---|
| 6-1 | 6-A | 6-2 | 6-Tower | 6-3 | 6-4 | 6-Tower2 | 6-5 | 6-6 | 6-B | 6-Castle |
