Unturned is free to play survival game that looks and plays like a zombie-invested minecraft. You start off with absolutely nothing, and it will be up to you to survive in the world and create a safe place for you to live. You have a radiation meter that goes up each time you encounter a zombie. Once the meter maxes out, you become a zombie yourself and the game is over. There are vehicles which makes traveling simple. The crafting system is extremely deep, allowing you to create an entire town if you so wish. As you kill zombies, you gain skill points to distribute as you like.