Sony has unveiled the free games that will be offered for January with your PlayStation Plus membership. The open world winter sports game Steep along with the action-RPG called Portal Knights. These are the two available on PlayStation 4. As for PlayStation 3, the Zone of the Enders HD Collection will certainly go down as a very underrated addition. Amplitude will be the other game available. Lastly, the Vita will get Fallen Legion: Flames of Rebellion and Super Mutant Alien Assault. You can check out the video below for footage of the games. The free games will be available on January 1.