Level 3-3 (Mario vs. Donkey Kong)
The first area has lava that rises at regular intervals, which the player needs to avoid falling into as they climb up the stage. The player first has to cross a falling bridge and then climb up ropes to reach a group of platforms with Katakata Kaen Heihōs on them. To the right is a Springboard that the player can use to reach a ladder. Next is a moving platform that the player needs to crouch on to move under the spiked platform above, and then the player needs to jump onto a hopping Ninji to reach ropes that lead to a platform with the Key. Carrying the Key across two more jumping Ninjis will allow the player to reach the locked door.
In the second area, has to first cross a red bridge with a Lava Bubble jumping up in the center. Next are some more platforms with Lava Bubbles jumping up between them, followed by a ladder, a moving platform, and a rope the player needs to use to reach a blue Color Switch. With the blue Color Switch active, the player can reach a 1-Up Mushroom on the left. Progressing to the right, there is a Hammer the player can use to defeat some Fires, followed by the Mini-Mario immediately after.