If a new report is to be believed, it looks like nearly all PlayStation 4 games will be required to support Remote Play on the PS Vita. The rumor comes courtesy of "a trusted PlayStation 4 developer source" to Eurogamer, who states Sony is mandating Remote Play on all PS4 games that don't require the PS4 Eye camera.
Sony certainly made a big deal of PS4's Gaikai-fueled Remote Play during the console's announcement event. Today's report also jives with previous statements from Sony Worldwide Studios president Shuhei Yoshida. Back in February, Yoshida told Engadget that Sony was requesting all developers test their games on Remote Play before submitting them for certification, though he made no mention of a mandate.
Of course, the Vita doesn't have as many inputs as a DualShock 4, though Yoshida noted that developers can create custom control schemes for the Vita that make use of contextual buttons on its touch screen.