- [X] Increase difficulty.
- [X] Add music & sounds.
- [X] Keep score/difficulty level (resume & restart).
- [X] ~~Explain controls on info page~~ add settings for controls.
- [X] Fix usage of go/embed (and remove rice again).
- [X] Add monster animations (~~jumping on tile &~~ towards new tile).
- [X] ~~Scale icons (heart & star on right side) when playing.~~
- [ ] Change layout when playing in portrait mode.
- [X] Fix wobble animation.
- [ ] Add more unit tests?
- [ ] Fix z-fighting of monsters.
- [ ] Add exploding animation of monsters.
- [ ] Add audio settings (music & sound volume).
- [ ] Hearts must be saved as well for resume.