Google's Cardboard app is now available in 39 languages and more than 100 countries on iOS and Android.
The Cardboard developer documents are also now available in 10 languages to help even more developers around the world build for VR.
"With more than 15 million installs of Cardboard apps from Google Play, we're excited to bring VR to even more people around the world," Google Software Engineer Brandon Wuest wrote in a blog post.
Google also updated its Cardboard software development kits for Android and Unity with two highly requested changes: drift correction and Unity performance.
"This update includes a major overhaul of the sensor fusion algorithms that integrate the signals from the gyroscope and accelerometer," Wuest wrote. "These improvements substantially decrease drift, especially on phones with lower-quality sensors."
The Cardboard SDK for Unity, meanwhile, now supports a "fully Unity-native distortion pass," which improves performance by avoiding all major plugin overhead and lets Cardboard apps work with Metal rendering on iOS and multi-threaded rendering on Android.
"All of this adds up to better VR experiences for your users," Wuest wrote.
You can also now explore Google Street View in Cardboard with the Street View app for Android and iOS.
Anyone can make their own Cardboard viewer from scratch with open designs that are available for download. If you're not into the whole DIY thing, you can also pick up a certified viewer like the Mattel View-Master and Zeiss VR One GX, which are available now.