Assassin’s Creed - Assassin’s Creed is a best long running and extremely popular series of open world video games which mixture of action, adventure and more importantly stealth into a single experience.
Dead Frontier - Dead Frontier is among the few zombie based video games that you can obtain in your web browser and for free.
The Saboteur - The Saboteur mixes in the regular setting that many open world action adventures travel to simply by using a World War II theme instead.
7 Days to Die - 7 Days to Die is a post-apocalyptic survival game, during which players must craft shelters and horde resources in order to survive waves of undead enemies. Read more about 7 Days to Die.
Middle-earth: Shadow of Mordor - Middle-earth: Shadow of Mordor sets you in the middle of The Lord of the Rings galaxy when you combat orcs using unique wraith expertise.
DayZ - DayZ is an open world multiplayer survival game that tosses you in the midst of a zombie apocalypse.