PlayStation VR requires a PlayStation Camera for head-tracking purposes, but the only snag is that they're sold separately. Since this was revealed, Camera sales are up by 975%, according to VG247. And sales of PlayStation Move controllers are also on the up.
Most PlayStation VR games can be played with a regular DualShock 4 controller, but a few require the PlayStation Move controller.
PS VR has more than 160 games in development, with 50 games expected to be released by the end of the year. This includes Ubisoft's Eagle Flight, Guerrilla Games' RIGS and Sony's own VR Worlds, incorporating The London Heist, The Deep and Street Luge demos. It comes bundled with Play Room VR, a family-friendly multiplayer collection of six mini-games that hopes to be the Wii Sports-esque family gateway into virtual reality.