The game features two distinct game modes. The single-player, story-mode follows the fortunes of three characters. Players can choose to play as Ashley, a young photographer searching for her missing fiancée; Justin, a leader of a local street kid gang out to avenge the deaths of his friends; or Naji, an officer in the special police unit. Each individual has different attributes, weapons and story paths. Players need to eliminate waves of Invaders before confronting a Boss at the end of each area before progressing to the next part of the story. Rendered cut scenes punctuate the action and help the story to develop.
The survival-mode can be played by either one or two players. The objective is to collect points by destroying the marauding Invaders and blasting objects while dodging the hail of laser-death that the aliens rain down on you. In the survival-mode the game will continue relentlessly until your character's hit point meter reaches zero. Extra energy, bombs and better weapons can be collected as bonuses and are vital to achieving a high score.
In addition to the new-look Space Invaders: Invasion Day the game also contains a hidden version of the original 1978 Taito classic.
Space Invaders: Invasion Day will be available for the PlayStation®2 on September 5, 2003 and carry a mid-range price tag of £14.99 rrp.