This fantastic Cauldron Remake. was featured on the RetroRemakes blog recently.

Cauldron is a combination of side-scrolling action, platforms and mazes and plenty of old hags (you start off with 9 lives) in which you have to collect ingredients so that you can defeat an evil pumpkin. You can only land (and take off) in clearnings (i.e., in between trees and caves).

By the way, you can also download one of the original versions of the game from Commodore to play on your emulator. Cauldron and Cauldron 2 are available at www.c64g.com.