Thanks for playing!
About the gameplay, I think of it as being in the genre of Tetris, but played completely differently. If you think about how CS2 and Ultrakill are both shooters, but you wouldn't play them the same way. Blocks also only clear when the adjacent numbers touch each other in order. When that chain connects, all the blocks connected to that chain clear, which is why large chunks disappear at once.
Also a lot of people had the same issue about the slippery controls, that might be because of the web build.
Thanks for the feedback though!