This is a remake or "modernization" of the classic arcade shooter Centipede, originally released in arcades by Atari in 1980. This remake keeps some of the original game's shooter-style gameplay while mixing in more console-style exploration. Gameplay progresses through five "worlds": Weedom, Frostonia, Infernium, Enigma, and Evile. Players blast away at the classic centipedes, spiders, fleas, and scorpions while fighting new enemies like the mosquito, cockroach, and killer mushroom. A "classic" mode is also included, which allows players to play the classic game in a new "3D" isometric perspective.
Hasbro apparently got some consumer complaints about not including a true version of the original Centipede with the game. (As opposed to their "classic mode" that featured the original game play with an isometric perspective.) Thus, they added a true classic version to the PlayStation release.