The gameplay is well done and engaging. I think the way that you float the menu back down when the player dies to restart is great.
Some feedback:
- The color palette makes it difficult to see the player and platforms. If they stood out more that would make it a better experience.
- It would be great if it was possible to use a/d keys to move as well. I've got one of those keyboards that don't have arrow keys unless you hold the fn key so having a/d would've been more convenient.
- Some audio effects would be good.