Aside from its social feature, Facebook is also known to carry cutesy and wholesome games such as the "Candy Crush Saga", "FarmVille", and "Pet Society". But all that's about to change with the introduction of "Dead Trigger 2", Kotaku reports. This is the online social networking site's first first-person zombie shooter game.

The game was first released by Madfinger Games in 2013 as a sequel to "Dead Trigger" for the Android and iOS devices. According to Inside Social Game, Madfinger recently announced that it has launched the second installment of the zombie-shooter mobile game to the Facebook platform.

The game brings players into a world plagued by a zombie apocalypse where they must survive and battle through hordes of the undead using 31 different weapons in over 600 missions and 27 different environments based in Africa, USA, Asia and Europe.

Weapons can be upgraded using the points or money earned after accomplishing each stage. They can also develop new weapons, healing items, and other upgrade bonuses back at the safe zone or hideout.

Additionally, those who have been playing "Dead Trigger 2" on their mobile devices can sync their progress on the Facebook game and vice versa. In a press release sent to VG247 last Feb. 20, Mark Rabas, CEO of Madfinger Games said, "We have a standard that allows multiple users to save their progress on a shared device with one account. This means the game progress will be synced across devices. So every activity in the game on one device will be reflected on the others, including Facebook."

For now, the game can be played for free by downloading it through Facebook. This is because developers are still on the testing phase of the game to see of the core gameplay will still work smoothly even without in-app purchases. Once a final version of the game is released, microtransactions may be included in the game.

Check out Dead Trigger 2's demo gameplay: