For the open source category, you'll need to have a README file and License file.
The sound effects are really good - add some music for even more immersion (I like the music that you have in the opening, so maybe keep that throughout the game). The game itself isn't intuitive from the start. I was trying to figure out how it works and what to do; the video explained it but maybe having a tutorial level or similar would help your game. My dice glitched out at one stage as well... got stuck half way between the table and the dice. Very fun and unusual concept, nice job! It's rather addictive too. Add even more levels when you get the chance!