Space_Invaders

This game is a reimplementation of the original Space Invaders Game at https://github.com/leerob/space-invaders

The following features were added:

1. Allow double player mode
2. Add three additional game items(You can check the introduction at the beginning of the game)
3. We also completed comprehensive software engineering documents, please check Doc folder

Future work can be done:

"Difficulty Level Selection" function may be added to the game. Different difficulty levels may be implemented by varying spaceship moving speed, bullet speed, etc.