Unturned is a great zombie survival based game where you get resources, hunt wildlife and find guns? Kill thy zombies and humans that lie in your path!

Garry's Mod also known as GMOD is one of the best sandbox games ever made if not the best! You have unlimited resources and many types of gamemodes!

Reign Of Kings is a great game itself a medieval land where you mine resources and hunt wildlife to taking the crown of thy king! Peasant then king.....

This game is a legend not only it has great gameplay but it's tactical side isn't as hard to learn and you learn something new everyday on CS:GO!