Hello - I'm hoping to get the 2015 13" rMBP next week - 2.7GHz i5, iris 6100. I'm just hoping I'm right in assuming that it will be able to play the majority of older games and newer indie ones - basically, I'm not too interested in playing big budget 3D AAA games on the macbook such as the new call of duty / Battlefield / Arkham Knight, because I'd rather play that kind of thing on console, but I do want to be able to do things such as emulate PS1 and N64, play less beefy, probably older commercial games available on steam to the level of say, the original Mass Effect or psychonauts and newer 'indie' games, for example a hat in time (runs on unreal engine 3 I believe). My current 2009 mbp just can't handle them, I'm guessing it's due to the poor NVIDIA 9400m. And just in case, would it stretch to bigger games such as The Witcher 2? That's likely as intensive as it would get. Furthermore, would the performance generally be good enough to use a virtual machine to play similar sort of windows only games for example, would newer indie titles such as Ori and the blind forest run okay? And for such a game, would it be essential to go for 16gb ram over 8gb? I'm really agoniseing over upgrading the ram right now! Thanks!