So I recently got into a new fan game called Mega Man Maker, which for those who don't know, is a really cool engine to easily build, share, and play custom Mega Man levels. Its design is based a lot on Mario Maker (and SMBX in that case) and it's just damn fun to make levels on.
If you're interested you can get the game for free here: https://megamanmaker.com/
I haven't really found too many good levels aside from those on the most popular list, so if any of you have or know of some good ones, share them here! I'll start with my first level, Breakneck Quarry.