Description

You are the Space Defender on a mission to avenge the murder of your friends who were killed by invaders from the Helion constellation.

Instructions

Your aim is to destroy the enemy space ships and their bosses. To fly your space ship use the following controls.

Move Forward	Right Arrow Key
Move Backwardd	Left Arrow Key
Move Up	Up Arrow Key
Move Down	Down Arrow Key
Fire	Control Key

Collect weapon upgrades as well as bonuses when you destroy the bosses.