If you are only seeing a picture of Alphattack,

then you need to download Adobe Flash Player for your computer.

If you are on a tablet or phone, then you need to download Alphattack from
the App Store or Google Play.

Alphattack Instructions

Kill enemies by pressing the corresponding letter on the computer keyboard. Hit SPACEBAR to drop a Panic Bomb that will destroy all the enemies on the screen at once. Kill Bonus Letters to complete the words 'LIFE' or 'BOMB' and get, respectively, an extra life or an extra Panic Bomb. Use the 'Pause/Break' key to pause the game. Kill the aliens as late as possible to get higher score (max 100).