Harley's Humongous Adventure is a side-scrolling 2D platform video game released in 1993 for the Super Nintendo Entertainment System.

The player controls Harley, a man in a green suit who has shrunk himself to the size of a bar of soap.

Visually, the game utilizes a mix of pixel art for the stage backgrounds, the menus and most objects, and digitized clay animation models for all characters.

This programmer previously wrote games for the Apple IIGS computer, which happens to share the same 65C816 microprocessor as the Super NES.

It features Harley blasting out of the kitchen sink, holding a red plastic push pin for scale reference.