Ok, bear with me here. Buy this on PS3 and not only will you get a code for 30 days of play in this subscription-based MMORPG, but you will also get the option to upgrade to the PS4 version for free if you register by the end of the year. Once you do though, you'll be unable to use the PS3 version anymore. We're presuming there'll be a hefty PS4 download involved too. This is a great incentive to give the RPG a go regardless of which Sony platform you're using. Considering the PS4 disc version is at least £20, this really is a no brainer.
Thanks to cbr6fx at HotUkDeals.