Your base is now under attack by hostile aliens! Your mission is to destroy all their motherships and annihilate all the extraterrestrials that will come in your way. Defend your base and survive! Unlock all the achievements from easy to hard. Kill all the aliens and earn lots of bonus points. Compare your points and compete with others in the leaderboard! Mars Defence 2 : Aliens Attack is a great game that you can play for free at in 4friv.com. Regardless Mars Defence 2 : Aliens Attack game, we provide many cool Friv 4 games to play for free.

Use Arrow keys And WASD button to Move, Use Move Mouse button to Aim, Use Left Mouse button to Shoot/Attack, Use Shift button to Run, Use Spacebar button to Jump, Use R button to Reload, Use E button to Use Item, Use 1 And 2 And 3 And 4 And 5 And 6 And 7 And 8 And 9 button to Select Weapon, Use P button to Pause,

shooting, 3d, webgl..