InvadersSubtract

A fleet of 10 robot invaders is attacking the Earth.

Tap or click one of your 10 laser cannons to destroy each robot invader.

Each invader is accompanied by 9 decoys that have the power to reflect your laser beam back to destroy your laser cannon.

The Defence Computer will display a clue on-screen to help identify the REAL invader, for example 9-3 identifies 6 as the REAL robot invader.

Warning! Mirror images can reflect laser beams with deadly accuracy.

Destroy 10 robot invaders in the shortest time and be top of the leader board.

Beat your best score and compete against your friends and classmates. Parents can join in too.

No touchscreen? Click on a cannon or tap the 1-0 keys on your keyboard to launch a laser bolt.