Everything about this game was pitch perfect. The minimalist art, the mechanic, the controls, the sound; I feel like with a bunch more levels, this could easily be a puzzle platformer you'd see on Steam. The raycast shadows were awesome looking, too.

I love that it's kinda like Super Meat Boy, but your ghost serves more of a purpose than just taunting you. I could gush for a while about this mechanic, and I think you've done a decent job exploring it. I'm sure there are a million other ways you could think of using it. Certainly there could be room for enemies or turrets that you could block with your body. Also maybe if there was some way to turn the bodies into moving platforms, I think there's a big possibility space there.

Now that I've gushed for a while, there were a couple things that I think could be improved. The most important is that I think the time limit should go. I know it's for the jam, but I think the difficulty in the game should come from figured out how to use your respawns to get all the orbs and get to the end (maybe even a reward for beating the par number or something). I think having a time limit just kind of muddies the mechanic and makes it more of a blitz than a thoughtful platformer.

Second thing is that the green squares are too small. This wouldn't be an issue if it wasn't for the time limit, but there were a few times where I nearly ran over on time trying to make the block get in the exit.

Anyway, super cool game. Please keep developing it. /novel

Dhamm Nice lvl dising. When I was playing I was sitting on the tip of my chair. Love it. Only the negetive thing was: I found it divecult to know to open the doors, you can improve it with: lvl design or something like a text, but text is not a good thing :P. But realy cool game! Nice shadow effect.

Awesome game! Nice design, concept, asthetics and polish. I really enjoyed playing it through.

Just some minor things that bothered me: Not being able to reset the level at any given time, the shadow thing sometimes flickers, the cursor is visible.

But overall great job, definately one of the best games I tried so far :D

Great job! Loved the minimal style of everything,  and the particle effects on the player were awesome!
The sacrifice mechanic helped bring something special to the game, so that it wasn't just an ordinary puzzle platformer.
The player movement was something I felt wasn't too good. Perhaps speed it up a little? And having a greater gravity applied to the character when falling sounds kinda weird, but it really helps getting rid of that sort of floaty feel when falling, whilst also letting the player jump high. 
And maybe make the green zone two cells wide? Found it a little annoying a few times tryna get in... but that was rare so maybe not such a big deal haha

Perfect excuse to use a square for a character, and a really original 'building' concept. I didn't like having a time limit, but it had to be there for the jam I guess. I didn't get far enough to see all the applications for the block placing, but it seems really flexible to maybe block projectiles or even safeguard lemmings-like npcs in an escort mission. I think  being able to manipulate the block would be cool, perhaps through intentionally dying by touching a lethal liquid that has the side effect of inflating your blocky corpse to 3x the size, or one making you bouncy or  sticky for other platforming opportunities. You could extend the mechanics by playing physics interactions that work one way when you hit the environment and another when you hit your dropped blocks. Also, there needs to be some sort of flood of the boxes at some point. It's required. Thanks for sharing this.

Really cool concept, using lost lives as means to progress.  Apart from some platforms that are not very visible, the game is well put together. Good job.

Wow this is really good, and fully produced with nice music and polish effects. Great job!

Great game, I really enjoyed it, first game in this jam I had fun until the end of the game, nice work.