9921! Feels like a real classic arcadey entry, like a snake or a tetris, love me a small ruleset and escalating mechanics. One thought I has was I wonder if there's a way to do the spike removal / cycling without the mouse? the aiming/shooting feels like an element that kind of tethers it to that control scheme, whereas I'd love to have a go at this on a d-pad.
The visual style is really clean, though I think that comes at the cost of being a bit plain, the player and blips could have some funkier design imo! Overall quite impressed with this entry, slick work!