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Laser Aliens is a downloadable microgame in WarioWare: D.I.Y. and WarioWare: D.I.Y. Showcase. It was released on July 15, 2009 in Japan, June 14, 2010 in North America, and July 16, 2010 in Europe. It is based on the many Arcade games where the player is in a spaceship fighting off enemies or obstacles, like Space Invaders.
The objective of the game is to destroy all of the aliens that attack the player's spaceship. They swoop down on the player from the top of the screen, one after the other, but only one at once. The player has to tap the screen to shoot at them. However, there are different kinds of aliens that will attack the player. Blue aliens, which look like blue squares with faces, legs and antennae, go down after taking one hit. Purple aliens, who look like blue aliens, but purple, take three hits to go down. The boss, who is a very big, grey rectangle with an angry face, and a blue alien standing on it, has to be shot 10 times to go down. If the player completes this feat, they will win the game. If any of the aliens touch the spaceship, or the player cannot defeat the boss within the time limit, the game ends with a loss.