The armies of Lord Halley are launching attacks on planet Earth. You are the last chance for Earth, piloting a craft specially developed to engage these hordes. You must fight your way through their defenses to the final goal, the alien base. The final battle is about to commence!
Halley Wars is an action and adventure game set in space. It's a sequel to the arcade game Halley's Comet . The game has 6 stages set in locations such as above planets or in asteroid fields. There are end of levels bosses at the end of each stage, each with their own weaknesses. There are power-ups that can be picked up along the way, which upgrade your weapon strength, speed, add explosive pods and shields.
What makes this game stand out is the destruction of comets on your journey. Each comet and ship that you don't shoot makes it to Earth and does some damage there. Comets do more damage than enemy ships. If Earth's damage level reaches 100%, the game is over. For every 2000 points you score, 1% of Earth's damage is repaired.