Mona and the Witch’s Hat is a homebrew game by Thomas Neptune and Sergeeo made for the original Game Boy. You play as Mona, a mischievous cat that gains magical powers when her owner’s witch hat falls on her head. It features four levels, and can be completed in about 20 minutes.

Storyline:

What a peaceful day! As the sun sets and the moon begins to shine its light over the village, a young witch finishes her busy day of potion making by hanging her hat and going to bed. Her cat, Mona, doesn’t want to go to bed though. She’s more interested in the treats the Witch left out! But things don’t go as planned when the Witch’s hat falls on Mona’s head and everything comes to life. Now she has to turn everything back to normal!