Good Luck In The Year of Ox

Course Assignment. My very first mini game.

Description:
The game tests with several basic techniques in making games and provides experience in "contrast". 
Theme/Story: Inspired by the myth of Chinese Lunar New Year, the new-coming guardian little Ox needs some help to collect lucky money, avoiding the Monster Nian. 
Contrast: It has 2 types of 2d games in pack, and 2 levels of difficulty for players to choose, in which the enimies will act in different ways. Requirements for achieving the goal change along with the level setting as well.
States: The game has a final goal of all lucky money collected. And it is able to quit the game or to change the states at any time by calling out the menu.