Pretty cool, though the last tutorial level is pretty difficult. I also didn't feel very compelled to make my own levels. This is likely because there is no incentive to do so.
A downloadable game for Windows
Made in 48 hours for Ludum Dare 45
Theme: Start With Nothing
Ludum dare page: https://ldjam.com/events/ludum-dare/45/s-w-n
S.W.N is a platformer with a level editor where you start as a total zero, not even able to jump. Touch other numbers, gain and spend their powers to perform normal platforming actions. Be mindful, as performing a jump or dash reduces your number until you're back at zero. Touch flag to win!
Post Jam Version
Update 1: Checkpoint added!