It prevents the aliens from entering the party, because it is a party only for humans. - Beautiful pixelated graphics. - B.S.O. Original. - Fast and easy to play. - One touch control. - Funny characters. - For all ages.
Keyboard: Right arrow to pass, left arrow to destroy. Touch: Touch right part to pass, touch left part to destroy.
This video is the solution for NMAliens game. Here you will find the answer for each level of the first NMAliens game.