I'm a big fan of the base concept. Having a platformer where you have to throw around light-sticks and pick them back up, or be careful not to waste them is pretty fun.
And while the game doesn't have a lot of sounds, the 2 for throwing and picking back up again really adds a sense of tactile-ness.
My one complaint about the mechanic is that the light-sticks are a little too slippery, and often end up sliding of a platform, leading to a (perceived to be) unnecessary loss of a vital resource.
While I enjoyed the games art, the characters and environment, for these purposes also UI, seem rather mismatched in their style. (except for the crocodile. That could be in a photorealistic game and I would still love it)
My last 2 points, I know to be due to the jams time limit, but the "ammo count" for the game jam appears very rushed, using the default font and being partially off-screen. And finally, after you fall, you respawn, problem is, at least for me, that only happens once. After that, I have to manually reload the page to start over.