Star Defender 4
Star Defender 4 - interesting online flash survival game. Your space ship is armed with the primary and secondary guns. The primary gun reserve is unlimited. So you may use it as much as you want. The secondary gun reserve is limited and you are supposed to replenish it in the game process. Use you Mouse Left click for Primary Gun shot and Ctrl button for Secondary Gun shot. PC version of Star Defender is also available here: Star Defender 4 , Star Defender 3 , Star Defender 2.