The 1999 edition of Space Invaders rebuilt the game from the ground up. It was fully colored and modeled in 3D with a new feature involving special attacks, based on a variety of aliens with different abilities. Hitting four of the same type of alien would grant one special missile to the player, fired with an alternative fire button which can be changed in the game's settings.
The game boasts an original soundtrack (Never officially released) and bank of sound effects, unlockable game modes and Easter eggs, as well as several references to the original Space Invaders. There is also a 2-player mode, which adds a second, yellow tank (Player 1's being blue) to the action.
Players can save their progress at any point.
The game also had something of a storyline. An opening cinematic shows a pilot of a new style of tank, driving it around a desert base, presumably on Earth. The pilot drives to the fence around a 'Tank Graveyard', containing 3D versions of the original Space Invaders tank, dilapidated and falling apart. A sign notes that the graveyard honors "Those who fell in 1978". As the pilot nods approvingly, a siren begins blaring in his cockpit.