If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Galactic Defender is a RTS/Tower defence game with turrets that can be moved and a scrolling map. Six different starships, two special weapon to unlock, three different maps, two difficulty levels and 36 waves in this frenetic space game! use mouse to select/place/move startships!
This game is played with mouse only.