Galaga

In this fixed shooter the player controls a starfighter against the Galaga. The objective is to defeat the aliens, which fly from top and sides of the screen, shooting down projectiles. Colliding with projectiles or aliens means losing a life. Boss Galaga can capture the player's ship, returning with it to the top of the screen, costing the player a life. The player can shoot down the Boss Galaga as it dives towards the player and rescue the captured ship. The two player ships will then turn into a dual-fighter with additional power. Destroying a Boss Galaga with a captured ship while in formation, the captured ship will turn against the player and return in a later level as part of the alien formation. Enemies become more aggressive as the game progresses, increasing the number of projectiles and diving down at a faster rate. Some enemies can morph into new enemy types with different attack patterns.