It's not. This is a pirated game manual. A really, really funny one.
Reader Andrew noticed this Avatar for the Nintendo DS manual at the game retailer where he works. The non-legit pirated game was inadvertently accepted as a trade-in — and whoever pirated this title went as far as creating a 20-something-page instruction manual that doesn't so much explain how the game works, but ultimately roasts the hell out of it.
Choice bits from the manual:
"This is a pretty game that gives you a glimpse at the inviting world of Pandora, and there are a few interesting ideas buried within. However, the broken targeting system and inconsistent aiming constantly yank you from the reverie, and the story's overt moralizing doesn't do the game world any favours."
"Avatar is sometimes boring and sometimes frustrating but rarely satisfying, and it can be safely categorized as 'another movie game you don't need to play.'"
"It's like the Neverending Story, expect it ends, and the story stinks."
The images in the manual are of the PC version of the game based on the Hollywood film.