You have a README which is great, but you'll need a License file as well (these are two main criteria for open source category).
The "Continue the game" on the main menu is super hard to read. I got to 50%, but nothing is happening; I tried moving it around a little bit, but still nothing happens even though I have 50%. Fun concept, and different which is exciting. I like the clean prisms, add some music and sound effects and this would be awesome. Great work on your submission.