I recently made a small mockup following the GBjam restrictions e.g. 160x144 resolution and max 4 colors, i had so much fun with it, that i actually turned it into a little prototype.
There are 2 Levels so far, you can try it out in the arcade: https://www.scirra.com/arcade/other-games/retro-dude-vs-evil-meanie-12904
Since I enjoyed working on the prototype so much, i'm planing to finish every level on the map and then have an actual release.
If you played it, please let me know what you think! Plus, in case you have some ideas for powerups or enemies pls let me know. I'm trying to get away from the standard mario-like stuff but its not that easy, so you could really help me out there
Anyway thanks for reading and have fun!