n 20XX, mankind left Earth leaving animals to fend for themselves. The once busy streets of Tokyo are now home to lions, tigers, chickens, and various other animals. All of them are now fighting for survival.

Tokyo Jungle has two modes: Story and Survival.

In Story Mode, the player plays through missions centered around various animals. Eventually, the player will discover the truth behind mankind's disappearance. A Pomeranian dog and thoroughbred racehorse are key characters in the story.
In Survival Mode, the player takes control of an animal and fight for survival against other animals for as long as possible. Tokyo Jungle has online leaderboards so the players can compare their survival skills against one another. Smaller animals will fight in groups, and the player's group can win fights against larger animals by just having one of the group survives the fight.
The player will have to build up a pack of animals. This is easier for some plant eaters, which means the player may not necessarily be at a disadvantage even if a weaker type was chosen.
There are 50 breeds and 80 types of animals to be expected. Animals confirmed for Tokyo Jungle include lion, crocodile, tiger, giraffe, hippo, cheetah, chimpanzee, gazelle, chicken, beagle, tyrannosaurus, hyena, and fox. As the player plays through the game, additional playable animals will be unlocked.

It's the best looking piss I have ever seen

I really want to play this.

So I'm guessing no one bothered watching the feature on NHK/imagine-nation?

They spoke to the developer about how well the game may or may not do overseas Obviously that's not a confirmation of anything but it is encouraging!

Japan’s Wonderful Animal Fighting Game is Still Coming to the West. YES.
Tokyo Jungle, Sony Japan's game about post-apocalyptic fighting animals in a devastated Tokyo metropolis, may seem like the most Japanese thing ever. And it is. That's not stopping the game from coming to Western PS3 consoles, though.

While the game was originally revealed for European PS3s all the way back in 2010, the resulting silence and lack of US information led many to believe it simply wasn't going to make it. Well, Sony Europe has sent out a new fact sheet for the game, reaffirming its intent to release it in Europe and Australasia.

No such move from Sony America, but given the fact the PS3 is region free, worst-case scenario means US owners can import the British or Australian versions.