AG80 on 27 July 2015
1. Rockstar North
2. Santa Monica Studio
3. Naughty Dog
4. Rocksteady
5. CD Projekt Red
I also think Rockstar Leeds deserves a mention, they have made fantastic games like GTA: VCS and GTA: CW which are really fun and underrated, though I think CD Projekt Red just inches past them due to The Witcher 3, which was mind-blowing.
