Fair warning: this comment will be a mess.
I was attracted like a moth to the cool graphics. You've really outdone yourself. It's beautifully minimalist and gives me Tetris Effect vibes. I don't like the sound when you select a button or change the position of your cursor, it hurts my ears. I'll definitely keep this game in my "games" folder for later. I love how the blocks don't immediately disappear, but you have to keep them in place for longer, it really adds depth to a single arcade game. Not to mention the palettes and stuff. Anyhow, it unfortunately (imo) doesn't really meet the theme, I mean I guess you can call it neon, but it doesn't really look like it to me. Thank you for making this.