A great singleplayer story rpg, with a good storyline, and a bad ass monster hunter. Not open world like skyrim. But can be modded just as much.

It has a great story line, Awesome test, and much more. If you liked portal 1, then you need the portal 2.

If you like sandbox games, then you should play the best, and that game is Gmod. and With an ever growing amount of mods, you will have a blast!