Rumpeldunk
Some time ago, when I was playing around with PICO-8, my daughter, who is a huge Harry Potter fan, asked me if I couldn't make a Harry Potter game. This is a small attempt at something playable in PICO-8.
On PICO-8
If you're not familiar with PICO-8, it is a "virtual" console where you have to make games with a fair bit of constraints. Their purpose is to naturally limit the scope of any idea, thereby making it easier to actually complete projects. The software ships with a nice fantasy environment for making games in, where you can make retro graphics and sounds together with the code.