I Wanna Maker on Steam
store.steampowered.com
I Wanna Maker is a precision platformer with a robust level editor and online level sharing, based on I Wanna Be The Guy fangames. Create complex levels using a variety of objects, a powerful events system, and customizable visuals. Browse levels online, take on challenge modes, and more!

I Wanna Maker is a free fan-made game that lets you create “I Wanna Be the Guy” levels. It quickly grew to be so much more. If you’re a fan of Mario Maker or precision platformers in general, you should give it a try.