Forwarding the instruction: After downloading, rename GMTKGameJamProj_Data to MagJohn_Data to play.
With that out of the way, I have a qualm with this game. Everything here has a fantastic first impression. Great setting, innovative controllers and mechanics, gorgeous graphics, and the idea of a platforming level with stuff to collect for bragging rights. For what I could play of it, it was a fantastic time.
But I couldn't progress past this point after more than a few attempts. No matter what I polarized or moved, the character was stuck at best. I'm sorry that I couldn't play more of this, since it looked very, very promising. I'm no stranger to unintended things like these ruining an otherwise great experience, so I'm still rating this more adequately just in case I'm the minority that couldn't progress.
For what it's worth, it still showed a lot of promise, and, were it not for that corner of doom, I could have seen it become one of my favorite games in this jam. Maybe after a patch? Here's hoping!