In the fixed shooter Space Invaders, the player moves a laser cannon across the bottom of the screen and fires at aliens in the sky.
The aliens start out as five rows of eleven, moving left and right as a group and moving down every time they reach the edge of the screen. The goal is to shoot all of the aliens and kill them all. When the invaders reach the bottom of the screen, the game is over.
The player has three lives. The aliens fire projectiles at the player's cannon to try to destroy it. The laser cannon is partly protected by stationary defense bunkers. The aliens slowly destroy the tops of these bunkers, and if the player fires while they are under one, they destroy the bottoms as well.
Controls
Move with AD or the left and right arrow keys.
To shoot, press the space bar or the left mouse button.
