Daydream is Google's big new push into virtual reality.
Unlike the bulky, several-hundred-dollar pieces of kit from Oculus or HTC, all you need is a relatively cheap headset, the accompanying motion-sensitive remote, and a modern, "Daydream-ready" smartphone capable of running the apps for it.
At a fraction of the price, it is never going to be as sophisticated as its high-end rivals. But on the flipside, it's far more accessible.
Google is betting that most people have still never tried virtual reality before — and want to dip their toe in the water with something cheap and cheerful.
But once you've got one, there's the burning question: What do you actually do with it? The platform is still in its infancy, but we've rounded up a selection of some of the most interesting-looking and coolest Daydream VR apps available today. Keep scrolling down to check them out.
1. 'Keep Talking & Nobody Explodes'
"Keep Talking & Nobody Explodes," already available on other virtual reality platforms, is fast becoming a multiplayer VR classic.
The aim of the game is bomb defusing: One player, wearing the headset, can see the bomb but has no idea what to do to it; the other players, without headsets or sight of the bomb, have instructions on defusing it — as long as they can interpret them correctly. Frantic chaos typically ensues.
However, it's not cheap by app standards — it's listed on the UK Google Play app store for £9.99, or $9.99 in the US.
2. Google Street View
Street View is one of Google's all-time greatest inventions: An interactive 360-degree photographic map of countless millions of miles of roads across the globe.
It was available for Cardboard, Google's previous DIY virtual reality headset — so it makes sense that it would be available for Daydream as well.
Watching videos in virtual reality has always struck me as slightly strange — why not just watch them on a regular screen? But Google insists tha the VR movie-watching experience can be super-immersive, freeing the viewer from any distractions and giving them their own personal cinema.
If that sounds like your jam, you're in luck: Netflix has an app for Daydream that lets you watch its catalogue of movies and television programs in virtual reality surroundings.
4. 'PolyRunner VR'
"PolyRunner" is an arcade-style VR game — pilot your spaceship through alien worlds. Crash and you die. Dead simple.
5. 'Danger Goat'
"One runaway goat. 100s of dastardly traps in his way. Can you help him escape?" asks the Google Play description of "Danger Goat." It costs £4.99, and is exclusive to Daydream, with 28 levels to play.
6. The Guardian VR
The Guardian has an app which it uses to show-case custom-made VR experiences including a first-person look at what it's like to be locked up in solitary confinement, or go on a journey through the Victorian sewer system of London.
7. LEGO Brickheadz Builder VR
It's LEGO, it's virtual reality, what's not to like? The app lets you follow instructions to build models using Daydream, and it's free.
8. Google Arts & Culture VR
Google Arts & Culture is a curious product from the Californian search giant: It's basically a museum for your phone, showcasing classic art and culture (no surprises there!). With Daydream, that experience is brought into virtual reality, letting you meander around a virtual gallery space.
9. YouTube VR
YouTube's Daydream app is similar to Netflix's: Immersive video-watching in virtual reality, with voice controls to help you navigate.
"INVASION!" is an animated, family-friendly film that all takes place in full VR. It's narrated by Ethan Hawke, and directed by Eric Darnell, who previously directed Madagascar.
11. Star Chart VR
Virtual reality's allure is that it lets you explore other worlds, and that's something Star Chart VR takes seriously. It's a space simulator that lets you explore our solar system, and go star gazing at constellations in the night sky.
12. 'VR Karts: Sprint'
"VR Karts: Sprint" is basically a Mario Kart clone — not that there's anything wrong with that. You can race the computer, or other players online, and it has all the usual power-ups and weapons.
13. 'Mekorama VR'
This VR puzzler has you help a little robot navigate its way through block-y, Minecraft-esque worlds. It comes with 50 levels built in — but you can also build your own new ones, and share them online. It costs £3.79.
"Wonderglade" is a polished set of mini-games for Daydream, including mini-golf, tilt-racing, and "Magic Mayhem."
15. 'Need for Speed No Limits VR'
"Need for Speed No Limits VR" brings the famous video game racing series to Daydream. For £10.99 ($14.99), you get a high-octane racing game with 30 cars and 12 tracks.