EDIT: As Jon's just reminded me, PS Plus users still have until Xmas Eve to download this for FREE.
Dark Arisen is the name given to the huge expansion pack for Dragon's Dogma, but this disc also includes the full original game. Tesco are selling the game at over £6 less than the competition and this version is even cheaper than the original version. This game is huge and will last you ages, we'd advise spending time leveling up and finishing the main game before entering the Dark Arisen side of the game as things get a bit Dark Soulsish.
Thanks to bargain76 at HotUkDeals.