You collected them for more essence. I still have a few pieces to get done for tomorrow's due date. I'll look into the jump situation. There is a double jump and you can jump through the bottom of blocks. But I'll test it out and take a look. Thanks for the feedback and issue report ;).
Odd. Your the first that couldn't do that. Hmm...I wonder if it's a Mac/web browser thing. You could also plug in a gamepad. That also works with the game. I'm adding in audio now before a pause/option screen, start screen, etc. Then the odd polish bit tonight. Hopefully tomorrow I can get one last thing in as an "End of the Game" thing...That's tomorrow before the deadline.