So that's the basic game. There's plenty of space on the SAMD51 to add features. Some could be:
- different colored posts
- make gravity increase over time (making it harder to stay aloft)
- add starting difficulty selection
- progress tracking, i.e. how many screen advances the player gets before colliding with a post
- dynamic posts that change height as they move
As you can see there are all sorts of additions that could be made. Have fun exploring the possibilities.