Three PSOne games are being given away for free on PlayStation Home, in the area called the PlayStation 4 Experience.
The three classic games available are: Twisted Metal, Warhawk, and Destruction Derby. The promotion is on the PS3, and requires a virtual tour of the PS4 to gain access to the games.
Once accessed, gamers will interact with an oversized PS Vita, and go on a "Quest for Greatness," scavenger hunt where 13 special cards are hidden in various virtual objects.
According to Polygon, the whole process takes about 10 minutes or so as the hunt requires simple puzzle solving and movie references. During the game, PS4 title trailers for Knack, Killzone: Shadow Fall, and DriveClub are played.
Sony is also releasing a PS4 and PS Vita "Ultimate Bundle," and details surfaced online Friday as the holiday season is inching closer.
"We're really excited for Vita as we move into Christmas," Sony senior product manager of Sony Ben Law said to MCV. "We've got a great campaign with key messaging around new releases like Tearaway, the ever-growing game catalogue and the Remote Play service."
He also revealed to MCV that Sony was going to run a series of commercials called, "The Best Way to Play," for £2.5m. The commercial will focus on how the PS Vita integrates with the PlayStation 4 using its Tearaway technology.
The Vita will be able to be used as a second screen for certain PS4 games using a smartphone application and Remote Play mode, which lets the gamer continue playing what was on the screen on the handheld using wi-fi.
According to Polygon, Assassin's Creed 4: Black Flag, Resogun, and Diablo 3 use this feature.
The PlayStation 4 was released on November 15.