Dead Island: Riptide -- from Techland -- is going to offer a 5th playable character. The devs hope Riptide will make the whole story darker (VG247 via DIR).

"For example, in Dead Island the beauty of the island was often created by man ' the Beach Resort, Hotel, etc. ' and the terror was created by the zombies," says Deep Silver creative director Sebastian Reichert. "This main design theme has changed. Palanai is an island full of natural beauty, for example, wonderful waterfalls, contrasted by natural destruction caused by storms, monsoons and rain. And of course the zombies."

"Plotwise, 'darker' is good description of where we're heading, but of course we stay bright and beautiful on the outside," Reichert continues. "We are taking a very special step in this installment and we are looking forward to see how the fans react to it."

Oh and don't forget that the same folks who are working on this game are also working on Project Hell.