Shoot down different aliens attacking earth and progressively improve ship. 2D offline space shooter, keyboard and mouse required.
Alien invasion is a 2D offline space shooter chrome app game. It require mouse and keyboard to play. Game can be played offline. You control small spaceship and shoot aliens. Each new level introduce new kind of alien. Some aliens drop gold which can be used to improve ship.
Use mouse cursor to aim. Use W, A, S, D keys to move ship. Use keys 1..9 to buy improvements (if you have enough credit, shown at the bottom left). Aliens cause damage to ship when they are too close or when they shoot at your ship. Life indicator is at bottom right.