Lemon Face is a 2D side-scrolling parkour game developed in Unity. It took me three weeks. The game is currently under review on Google Play and should be released by the end of July.
The idea came from the meme picture on the right.
In the game, the dog can eat meat to extend its mouth. And if the dog eats a lemon with an extended mouth, the mouth will shrink and pop out from the back to boost the dog. And if the dog eats a lemon without an extended mouth, that is game over.