The mouth follows your actual mout. Coconuts are +1. Bombs are -5. Level 2 is when you have more than 10 points. In level 2, the bombs and coconuts fall faster and their frequency changes. If you get a score of less than 0, you lose. If you get a score of more than 15, you win.
Credit to https://freetouse.com/music/category/gaming for the background music. Credit to https://pixabay.com/sound-effects/search/ for the bomb and coconut sound effects.