Orbit: Satellite Defense

Orbit: Satellite Defense is a real-time strategy game in which you protect your planet from alien invaders. You reposition satellites, manually choose their targets and manage energy to send satellites into orbit or unleash planetary powers. Each satellite has its own strengths, and each alien has weaknesses to consider when planning your defense.

Campaign and challenges

Campaign Mode spans five planets, with five levels on each. The campaign and the three Challenge levels each have a fixed sequence of alien attacks and a fixed set of available satellites. Learning the attack sequence can help you defend optimally and earn a 3 Star Rating. Each Challenge level adds its own variation to the game's formula.

Endless modes

Four Endless modes pit you against an infinite swarm of aliens as you aim for a high score. Progress is saved automatically after each completed wave.

Satellites and difficulty

Satellites and enemies have distinct roles and weaknesses; neither is simply a stronger version of another. The game focuses on strategy rather than overcoming opponents through brute force. Its Spawner Systems adjust the challenge as you improve, and replaying Campaign levels becomes harder the better you get at them.

Scores and controls

Steam Leaderboards let you compare Campaign, Challenge and Endless score totals with other players. The game is optimized for mouse and keyboard, with keyboard shortcuts for all on-screen buttons. Manual targeting uses the right mouse button, removing the satellite pop-up menu from that interaction.