The Vanishing Transmission

The universe has been a pretty quiet place since the ghost army killed every sentient being in existence. I guess that's just the way things go.

Choose one of sixteen planetary system, and defend it from the ghosts by positioning four ships, each with its own unique weapon, amongst the planets. Each game goes for two minutes, and you get a score out of 100. Collect ithidium and use it to buy special attacks.

So everything's gone, but was it really all that great to begin with? At least we have the memories. I'll always remember the ithidium wars.