Nothing like LittleBigPlanet has ever existed before. Even if nobody buys it, the file servers remain empty, and the co-op space stays a barren wasteland, it's still a rock-solid platformer with enough levels and fun to justify your money. If you loved LEGOs and never lost that love for building and creating, you've got a lifetime of experimentation and play ahead of you.
And if the world falls in love with it, as they should, LittleBigPlanet is absolutely the best game on the PS3, the best game of 2008 on any console, and the best toybox you'll ever get to play with.
