Lately I've been working on recreating the World's Hardest Game in Java, and I think I'm finally at the point where I share it :D
Check it out here:
https://github.com/Dan95363/worldshardestgame
It even has a way for people to create their own levels, and instructions can be found in the project wiki. I would love it if someone could help develop this with me as a side project btw :P