7. Tom Clancy's The Division
While it might be overstating things to suggest that The Division 'took this year's E3 by storm', I'm going to say it anyway - The Division took this year's E3 by storm. Coming at the tail-end of an otherwise competent Ubisoft press conference, we tumbled into the world of The Division, a highly detailed co-operative third person shooter set in New York after an apocalyptic disaster has left the city in ruins. The Division - similarly to other games on this list - is trying to do a few new things with multi-player, in what we're promised will be a mix of traditional co-op play and player versus player combat. While details on the multi-player are hard to come by, suggestions seem to be that other hostile players could simply turn up in your co-op game, transitioning without artificial match-making screens getting in the way. The Division looks to provide plenty of activities outside of just shooting fools too, with crafting systems and survival elements coming in to play. While it's always worthwhile tempering high expectations with a little caution, the idea of exploring a ruined New York with a couple of friends and trying to survive in a world gone wrong is a tremendously exciting prospect and Ubisoft's demonstrations of the game so far have been highly impressive.
Ubisoft have already demonstrated some unique ways of playing the game, such as piloting a drone using a separate tablet to help scout for your friends. If these disparate elements all come together, The Division could be an incredibly forward-thinking co-op experience, that re-defines the way we play these games.