If you thought Google I/O would be nothing but smartphones and complex code, you clearly weren't banking on Google diving head-first into virtual reality.
Sure, Google Cardboard has been around for a while, but it looks like chump change compared to Oculus Rift or HTC Vive.
It starts with Android N, which is getting overhauled with plenty of VR-specific tweaks, like faster screen response times, reduced latency and more accurate motion sensors for better head tracking.
The first handsets won't be turning up until later in the year, but Samsung, HTC, Huawei, LG, Asus, ZTE, and other manufacturers are all on board.
Your phone will still slot inside, but a comfortable head strap should keep it locked in place without making your arms cramp up.
Daydream is set to arrive in the Autumn, but developers will be able to start putting games and tech demos together as soon as Android N arrives.