Main idea:
The level takes place in the solar system and you visit all planets of the solar system from Mercury to Neptune.
Secondary ideas:
Some must haves i would have is a short weather description show up upon entering each planet, the weather would be different on each planet corresponding to their actual conditions.
Potential should haves would be a visible solar system when you're travelling between planets, in between travelling to planets you would be on a ship of sorts.
Tradeoffs:
I would prefer quality and optimization for this level.
+200 points (+
2 more required exercises for Grade 1.
This exercise can be repeated for extra points.