Neat! I was a bit confused by the glass as it's invisible and also can't be placed in / replace sand, water etcetera. But managing to get more than three elements out of this is very cool.

Brings good memories since I'm a long time fan of Dust(always thought it was called Powder Game lol). I'm even feeling inspired to try and develop my own version of it. Though I hope the inspiration ceases soon enough because I got more important things to do.

I love these types of sandbox games! The way water flows is super relaxing, I spent longer playing than I thought I would. It would be really cool to add more element types, if you can somehow get around the color limitations :) I like what you did with lava using 2 colors, maybe other elements could also mix colors? Or maybe do some kind of palette cycling?

Anyways, fantastic game, thanks for making it!