State of Decay - 3rd person true open world survival horror, recruit other survivors, loot, build bases etc. Even on Xbox One though it runs like ass (terrible frame rate and prone to glitches). Not a super easy, or casual accessible game IMO. But i like it. Its different
Dead Rising 3 - Really fun, casual open world, dress up in ridiculous costumes, craft insane weapons and mow down zombies, has a relatively interesting story. Pretty easy game, has co op also. Loved it. (also the timer thing from the first two where you literally had a set amount of time to beat the game is gone, which i prefer since i wanted to loot everything and take my time)
Dying Light - people love this game, true survival open world gameplay from a first person perspective, lots to see and do, weak story. Its like Dead island, people think its better, i think Dead island is better. I don't like Dying light personally.