I like that it's playable on my basilisk-browser win8.1-laptop & that there are sound-config's like for music & effects, while I'd think "(can you beat the) square" sounds quite too common as title, still the gameplay and graphics being cool, especially including a fly that represents the protagonist.
If the level could be manually selected after completing one, e.g. either choosing "shop", "next" or "custom level", would be my personal suggestion.
What feature I'm kinda missing on itch, being a voting-option for this game?