not that i know of sorry (atleast not free ones) i work in 3d and have never done 2d games before >.< if u like the idea of making 2d games though you should check out game engine Clickteam Fusion. its pretty intuitive and fun to work with
Viewing post in quitting game jam. here are some ideas.
Hey man if you're looking for a tool for 2d pixel art http://www.piskelapp.com/ is a great tool that even works in browser. I wouldn't consider myself anything of an artist but this program has served me well through years of projects!