You are stranded on an island, and here you can do quests for the inhabitants, level up your character, build whatever you want, play with cool weapons and much more. Your goal is however to find a way off the island and find out how you got there. As mentioned, you can build, craft, and you can also manipulate the island's terrain.
The concept reminds me a lot of the TV series Lost.
The game features include combat, quests, crafting and exploration.
This game is still in alpha and still requires some work but could be very fun indeed once it is complete.
See my Video Review Here: Youtube.com