Believe the hype, this really is a game of 2011 candidate.
Unique and immaculate presentation complete with a gorgeous hand-drawn-but-computer-animated aesthetic and a cool, laconic, gravely-voiced narrator delivering procedurally generated monologues to progress the sparse but captivating story.
Underpinning the presentation are superficially simple but strong gameplay mechanics which shroud genuine depth - all of which are elegantly integrated into the setting. As an example of this: the upgrade system is based around which types of alcohol your character drinks before each level.
A triumph, perhaps *because* of it's humble indie roots.
It looks like "Avatar", only it's not in headache-inducting 3D and it's story is not an over-wrought Pocahontas rip-off.
The visuals are hardware-effecient and truly beautiful, yeilding level after level of well-focussed geometry bathed in gentle phosphorescence. They're nicely complimented by the music, which is simple and a little ethereal. The overall atmosphere is calm and relaxing, but also compelling and invigorating - which is no mean feat.
The gameplay is similarly elegant, with fluditity and solid design exuding from every frame. The Creavures interactions with each other and the environment are excellent, resulting in every character having a unique feel without loosing the overall accessibility of the basic movement or unfocussing the platforming.
An excellent little game, whos charm and class are well worth your time and money.
Like this game needs any recommendation: it was perfect in almost every way for it's time, and it remains one of the best FPS games ever made. Having a PC and *not* playing HL2 is the most epic of fails.