A pretty good puzzle game. It's all math based with you eliminating dice by putting them next to each other and combining them. It's a pretty straight puzzler in that there's only really one way to solve each puzzle but there's enough flexibility there to alleviate too much frustration.
Plenty of content but it's all gated which is a little annoying i.e. you must solve each puzzle before you reach the next. No skipping puzzles - nothing. That means you can get really stuck which is where I am at. No puzzle game should stop you dead in your tracks. It should have a learning curve introducing new mechanics along the way and then applying them but there shouldn't be huge leaps and, if there is, then it should provide you with some out to keep progressing.
Any worth it for a few dollars if you're a puzzle fan. Check out some videos if this makes no sense at all.