Well DayZ Standalone probably the best one.
How about Dead Island (not the Riptide) in first-person perspective? Or The Walking Dead Series.
But if you want a stress reliever and funny zombie game... You may wanna try the Plants vs Zombies Garden Warfare.. It is a Third person shooter game where plants and zombies are battling in epic challenges. Published by EA, Frostbite Engine 3 (same engine in Battlefield/ Medal of Honor)..