Description: The planet Earth is under attack. Engage and destroy incoming alien transports and destroy their mothership.
- Left-click to drop an item where the cursor is.
- Use the number keys to select a specific weapon.
- Press "space" for the next weapon.
- Press "b" for the previous weapon.
- Press "e" for EMP, when available
- Press "s" for shield, when available.
- Press "m" to toggle music.