The limited palette works wonders here, and the sound design is very cohesive and complementary to the visuals. Did you do the music/sfx, and if so can I ask what you used? Overall, the game feels great to play. I get knocked out soon after spikes start showing up—somehow they always take me by surprise—but I can just build up again!
Shout-out to the detail of supports showing up when platforms are placed off-kilter. It adds so much with so little.