The planet's rescuer

After the people had found the way to other planets it became clear that the space is full of dangers and hostile reasonable creatures. Now they know the location of Earth and constantly attack our planet.
Owing to the scientific discoveries we have built an orbital tank-a heavily armed orbital complex for protection of our planet. Upgrade your weapons and discover the new prompts.
Your goal is repel all attacks of an enemy and preserve life on Earth.

Game features:

• Numerous enemies with different peculiarities
  
• Several types of weapons and upgrades
  
• Hardcore levels