Sony has confirmed its line-up of free titles for PlayStation Plus subscribers in December.

As previously announced, PlayStation 4 owners who also have a Plus sub get free copies of Resogun and Contrast.

But there are also discounts on Trine 2 (20 per cent off until 13th December) and Super Motherload (10 per cent off until the same date).

PS Plus subscribers with the PlayStation 4 edition of Assassin's Creed 4 can also download a free ship figurehead starring Aveline, the protagonist of Vita spin-off AC: Liberation.

On PlayStation 3, Plus subscribers get Grid 2 and Guacamelee!, the latter of which is a cross-buy title with PlayStation Vita.

As well as that title, Vita owners get Sonic & Sega All-Stars Racing and Grand Theft Auto: Liberty City Stories. Not bad.