Dead Island takes place on the fictional (based off a true island near Papua New Guinea) island of Banoi. You play as one of four different characters with different skills and skill trees, and different intro videos. The worlds is half open, you can roam the world as you wish but you will have to go through the main story to progress to the next large open area
The combat is largely melee focused, but you also have firearms and throwing weapons, bullets and guns are scares in the start of the game, but towards the end of the game they are much easier to find. The zombies are mostly slow, but there is a wide range of different zombies throughout the game.
Dead Island: Riptide, was released in 2013. A spin-off, Escape Dead Island, Dead Island 2, is set to be released in 2016.