At some point during the gameplay you'll obviously be faced with a literal storm of enemies, who want to stop your slimes from perching atop their crystals.

I didn't mention this before, but the game has mobile support, so that's pretty cool. That "charging crystals" bit is actually just some HTML hanging down from above, and is not on the pixi js stage. This is my first time doing the UI in the DOM instead of the stage, and so far it seems promising.