A very creative take on the theme! It's a very simple premise but works well, and the simple presentation is effective. The online leader board is another awesome touch, it would have been awesome to have a larger arcade style one but it's understandable given the time limit.
Unfortunately despite playing a fair while I can't really say I enjoyed it all that much. From the tutorial graphics I assumed there would be greater visual feedback on cutting, and the shards of dice felt like they didn't register a lot of the time.
The dice time being a time limit is also a neat idea, but I think it encourages a safe, boring playstyle. I didn't feel motivated to go for big scores because I knew I'd eat up a lot of my time getting close to them, and I would still likely come out the other side gaining zero points. In contrast, small scores are easily achievable with little to no dice time used up at all. The best way to get points is to just sit and wait and ignore the fun parts of the game, which is a massive shame, and fatal to the overall enjoyment.
Overall, it's a very solid game with just a few things holding it back from a top score, so please take my comment with a grain of salt! The fact that optimising the fun out of the game is the only major problem just goes to show the depth of the mechanics. I'd love to return to this with a few tweaks post jam, it has the potential to be an amazing game that would fit perfectly on moblie :) good work!