"Metroid Prime 2: Echoes," a first-person shooter from Nintendo for the GameCube, is both fun and a pain at the same time. It keeps you on your toes, even when it makes you perform the same tasks over and over again.

You assume the role of Samus Aran, a female bounty hunter who travels through space in what must be the most complex armor known to gaming. Samus' shiny suit includes visors that scan and analyze life forms, machines, computers and alien languages. Her armor enables her to curl into a ball and roll through tight spaces. With some upgrades, she can roll up walls and perform gravity- defying jumps.

What her armor does not do is protect her from certain toxic environments, and herein lies the challenge. A good chunk of "Echoes" takes place in a toxic, evil enemy environment.