About Mars Invasion

Mars Invasion is one of our free simulation games. Play it instantly in your browser: no download, no sign-up.

Mars Invasion is a real-time base defense strategy game set on the red planet. Build power plants and miners, raise walls and turrets, train squads and research new technology to hold off swarms of alien insects crawling out of the sand. Scout the dark map, find every nest and burn them down. Eight stages take you from a quiet training zone to a brutal final assault, with laser towers, cannons and demolition troops to unlock along the way.

How to play Mars Invasion

Mouse: left-click selects buildings and units, drag to box-select squads, right-click to move or attack. WASD or arrow keys move the camera and the mouse wheel zooms. Pick a building from the bar at the bottom (or press 1-9) and click to place it. Keep your turrets behind walls, keep the power plant running, and destroy every nest to win. Space pauses, R opens research, Esc opens the menu. On phones, use the stick, the Build tab and the OK button.