I wonder how that breaks down. Does the attach rate count for copies of PS VR Worlds included in bundles? Does the attach rate count for games that have VR support, but do not require a PSVR (i.e. Resident Evil VII and Star Wars: Battlefront) or is it games that are PSVR only? Does it only count full sized games (digital or retail) or do smaller PSN games count (I'd imagine free-to-play games like Call of Duty VR, Gary the Gull, and Word War Toons wouldn't count)?
Currently, I have six PSVR only (retail) games (Until Dawn: Rush of Blood, Rigs: Mechanized Combat League, Driveclub VR, PlayStation VR Worlds, Eve: Valkyrie, and Batman: Arkham VR). As for PSVR compatible games, I have Star Wars: Battlefront. In terms of smaller VR games, I have Keep Talking and Nobody Explodes.