Level 4-1 puts Maxwell in a Super Mario Bros.-esque setting. The level has a brick floor, a man-eating plant in a green pipe, turtles, and crates that you can hit from below to reveal items. Inside the crates you'll find a coin, a mushroom, a flame-throwing flower, and a Starite, the object that Maxwell must collect to beat each stage. At the end of the level, a flagpole and castle are placed behind a staircase.

The hint for 4-1 is "Starite Get!" -- a reference to the "Shine Get!" phrase from the Japanese version of Super Mario Sunshine.