I think you're good to the end of 2015, with the standard release of FIFA, COD, NFS, AC,... as sloppy versions for the older Xbox360 and PS3. Most (and the best) games of 2015 will be XB1, PS4 and PC only. I think last-gen consoles will be dead at the beginning of 2016, except maybe for some XBLA of PSN titles.