Celebrating 5 years at the Zoo

Dragon ball xenoverse cause Oolong ~

And that is the most related thing i could think of

http://store.steampowered.com/app/12130/

Manhunt, because there's a pig with a chainsaw.

don't really know if he's in the 2nd game since i never finished it tho o: , doubt it.

I think it's entirely obvious what it should be, but in case anyone can't see it, I'll explain

Babirusa comes from the Malay words "babi" meaning hog and "rusa" meaning deer.
Malay of course is a language spoken in Malaysia, Indonesia, Brunei, and Singapore.
The capital of Indonesia is Jakarta, a city featured in Sid Meier's Civilization V, this is the point where I'd imagine most people stop, but Civilization V is not the correct game.
Civilization V, as the title suggest is a game created in part by game developer Sid Meier.
Sid Meier also created a game called Sid Meier's Alpha Centauri.
Alpha Centauri is part of the closest star system to Sol.
Proxima Centauri is the other star in the binary star system and is in fact the closest star to Sol.
Proxima is a declension of the Latin word proximus.
Latin of course is perhaps the largest single influence in romance languages (and an influence on other family of languages too!) thanks in part to the Roman Empire, at this point my selection should be clear, but I'll follow it through anyways!
Roughly around 150 BC, the Roman Empire had control of Greece, which of course had been home to the former Greek Empire, another of the great Mediterranean powers of antiquity (remember children, the ancient Greeks and Romans were on bad terms with the ancient Carthaginians, so we don't count them!)
Which leads me to my suggestion of Apotheon, it clearly follows that if you want a game that has something to do with the Babirusa, that it must be this (and because it's on sale for another 14 hours)

Game of Thrones has some pigs.

Ok, found your best option, if you can afford it. Certainly it's not a bundle game and everyone will be excited about it:
http://gta.wikia.com/Pigs

EDIT: oops, just noticed that you have four pages of answers, and three other ppl already suggested GTA V. So I guess I vote with them.

Final Fantasy IV has a spell that turns enemies (or party members) into pigs

Rayman Raving Rabbids has some races where you ride on pigs.

Sanitarium has a part with a pig in it. I think it was a toy pig though.

Ori and the Blind Forest just for the feels.

We also need a pig simulator on Steam.

the new Total War: Attila , in rome totalwar, you can release a bunch of pig ON FIRE.

Btw, what is the species of that pig may i ask ?

Farm Frenzy 4
Wildlife park 2 - farm world
Beyond good & evil has a pig i guess
Gray Matter has pigs too