What is cloud gaming? How it works and what you need

Cloud gaming lets you play a modern game on a phone, a cheap laptop or a smart TV without a console or a gaming PC. The heavy lifting happens in a data centre. This explainer covers how it works, what you really need at home, how the main services differ and when you are better off with local hardware.

How cloud gaming works

When you start a game on a cloud service, it runs on a powerful server with a graphics card in the provider's data centre. That server renders each frame, compresses it into a video stream and sends it to your device, much like Netflix sends a film. At the same time, every press of a button or move of the stick travels from your controller to the server, which updates the game and sends back the next frames.

Your device mostly decodes video and sends inputs. That is why a TV app or a browser tab can run games that would otherwise need a high-end GPU. The trade-off is that everything depends on the round trip between you and the server.

Latency: the number that matters most

Latency is the time it takes for your input to reach the server and for the result to come back to your screen. In local gaming, that delay is just the controller, the console and the display. In the cloud, the network adds to it, and the video has to be compressed and decompressed on top.

You notice latency as a small lag between pressing a button and seeing the result. In slow-paced games, such as turn-based strategy, RPGs or adventure games, most people barely notice. In fast competitive shooters, fighting games or rhythm games, even a little extra delay can matter.

Three things make the biggest difference:

• Distance to the data centre. The closer the nearest server region, the lower the delay. Availability by country varies by service.
• Your home network. Wi-Fi interference and congested channels add delay and cause stutter.
• Stability. Short drops in connection show up as blurry frames, freezes or lost inputs.

What internet speed do you need?

Each service publishes its own minimums, and they change, so check the current requirements before you subscribe. As a rough guide, 1080p streaming typically needs somewhere around 10–25 Mbps of steady bandwidth, and 4K streams need considerably more. Speed on paper is not everything: a stable 50 Mbps line with low ping usually beats a jittery 500 Mbps one.

Streaming also uses a lot of data, often several gigabytes per hour at higher quality. That is fine on unlimited home broadband but can burn through a mobile plan quickly.

What you need at home

• A device with an app or browser support: phones, tablets, many smart TVs and streaming sticks, PCs and Macs, and some consoles.
• A controller: most services work best with a Bluetooth gamepad; some support touch controls or keyboard and mouse. Our PC game controller buying guide covers what to look for.
• A good router setup: newer standards help with congestion and latency; our Wi-Fi 7 explainer explains what actually improves.
• An account and, usually, a subscription or game purchases with the service.

How the main services differ

The key difference is what you pay for: access to a catalogue of games, or the right to stream games you already own.

Recent changes show how quickly the market moves. Microsoft is adding monthly cloud-hour limits to Game Pass tiers from November and selling ad-free Xbox Cloud Playtime packs to people without a subscription. Amazon has put Luna games inside the Prime Video app on Fire TV in more countries. Carriers bundle access too: T-Mobile's new plans let customers pick Game Pass as a perk, as covered in our story on T-Mobile's T-Mix plans.

It is also a reminder that services can disappear. Google shut down Stadia in January 2023, and players lost access to the games they had bought there (Google refunded purchases). When you rely on the cloud, you are renting access, not owning a copy.

Cloud vs a console or gaming PC

Who cloud gaming suits

Cloud gaming makes most sense if you play casually, want to try big releases without buying a console, travel with a laptop or tablet, or share a TV with family. It is a weaker choice if you play competitive multiplayer seriously, have slow or unstable internet, or want to keep your games long term. Many people use both: a console or PC at home and the cloud for trying games or playing away from it.