Deal 10 in Sony's 12 Deals of Christmas promotion has seen the prices cut on Assassin's Creed 4 on PS3 and Pixeljunk Monsters: Ultimate HD on PS Vita.

Assassins Creed 4 Black Flag (PS3)

Was €69.99/AU$99.95/£59.99, now €29.99/AU$39.95/£19.99

Pixeljunk Monsters: Ultimate HD (PS Vita)

Was €12.99/AU$18.45/£9.99, now €4.99/AU$7.35/£3.99

PS Plus members also receive an additional 10 per cent discount on the two games.

Whilst the £19.99/£18 (PS Plus) price for Assassin's Creed 4 is very good, it's also a cheap way for PS4 owners to get hold of the next-gen version.

Simply buy the PS3 version through the offer, then log into the PS Store on your PS4 before the end of January and buy it for the reduced price of £10. This means the PS4 version can be obtained for a little as £28.

Deal 10 also includes a 99p SD rental of Mud, or £1.99 if you want the HD version.

Source: EU PlayStation Blog