First, I should outline the article structure. Start with an introduction about the game, its release, platform, and maybe clarify the confusion. Then talk about the game's mechanics, features, and gameplay. Mention the story if any. Discuss the challenges of emulating PS2 games on Wii, or if there's a way to play Zero Gravity on Wii. Maybe the user is looking for how to install the ISO on a Wii. I need to provide accurate information, maybe point to legal resources or emulation considerations.