It is an auto scrolling level with wooden smashers similar to Iggy's Castle.
A climbing fence with climbing koopas with spikes below.
A maze with Mechakoopas.
This next has four more doors. Mario/Luigi can pick which one they to go in.
It has spiked pillars and Thwomps and the player must run at the right time.
Contains Bowser Statues. Some Gold and some sliver.
This room has Chargin' Chucks.
After going through one of the four rooms the player is in the Back Door. The only difference is that there is no midway point.
The player must fight Bowser which takes 6 hits to defeat him. Sometimes Princess Toadstool pops out of the Koopa Clown screaming for help and throws an item. After defeating Bowser, the player saved Princess Toadstool and bring peace to Dinosaur Land.