Sure, here's an example implementation of the game you described:
This code sets up a game where you can spawn different types of creatures by tapping on the respective buttons in the spawn menu. The `a90` creature selects a random creature on the screen and attacks it when there's movement, dealing a huge damage. The `human` creature moves around randomly, and the `rush` creature moves towards another creature and kills it on collision.
Note: This is a simplified implementation and may require additional features and optimizations depending on your specific requirements.