The title says it all, really. I'll start us off.
1) Dying Light
Genre(s): survival horror, first-person, sandbox, action
Platforms: PlayStation 3
PlayStation 4
Xbox One
Xbox 360
Microsoft Windows
This one is at the top of my list because it looks amazing. It was made by the developers of Dead Island and Dead Island: Riptide. It's a zombie game, but it's very different. At night, the zombies become far more dangerous. They are able to hear and see you much easier at night. There are some mutations that only appear at night.
2) Watch Dogs
Genre(s): action, adventure, third-person, sandbox
Platforms: Microsoft Windows
PlayStation 3
PlayStation 4
Wii U
Xbox 360
Xbox One
I suppose you could call this a "cyberpunk Grand Theft Auto." It's a sandbox action game in which you are able to hack several of Chicago's electronic systems, including retracting pylons, allowing you to destroy pursuing vehicles.
http://watchdogs.ubi.com/watchdogs/en-us/home/index.aspx
3) GTA V High Life Update.
Okay, this may be cheating a bit, but with four new vehicles, a new assault rifle and God knows what else, this will be an amazing DLC.
Updated by dashingprince