Based on Jungletac's previously-released Danger Zone. Later hacked to create Hay Bales; the hacked version bizarrely replaces Donald and Goofy's faces with Duster from Mother 3, while leaving their bodies (and even Donald's hat) intact.
The player must collect all of the gems. Oddly, the level layout and mechanics are similar to Lode Runner, but the gameplay is largely different (and much more basic).