Cloud gaming sounds like magic: the game runs on a powerful computer in a data centre, and you just watch the video and send your button presses back. No console, no gaming PC, just a screen and a controller. Many game subscriptions now include some form of it, and some services are built around it. Whether it feels great or awful depends almost entirely on your internet connection, and not in the way most people expect.
When you press a button, that press travels over the internet to a remote machine. The machine runs the game, draws the frame, squeezes it into a video stream and sends it back. Your device decodes the video and shows it. Every step takes a little time, and the whole loop has to finish in a few dozen milliseconds to feel natural.
That loop makes two separate demands on your connection, and people mix them up all the time.
Bandwidth is the size of the pipe, measured in megabits per second (Mbps). A game stream is a continuous video, so it needs a steady amount of it. The more pixels and frames per second, the more you need. NVIDIA, for example, lists at least 15 Mbps for 720p at 60 frames per second and 25 Mbps for 1080p at 60 fps on GeForce NOW, rising to 45 Mbps for 4K at 120 fps on its top tier. Other services publish similar numbers, so check the one you are considering.
If your connection can't carry the stream, the service lowers the picture quality to keep up. You get blur and blocky shadows instead of a stutter.
Latency (what a speed test calls ping) is the delay, in milliseconds (ms), between your press and the server hearing it. A fast pipe does not fix a long trip. NVIDIA says it wants under 80 ms to its data centre as a minimum and under 40 ms for the best experience. Distance matters, but so does your own network: Wi-Fi is usually slower and less steady than a cable, and a busy home network adds delay.
This is why a 500 Mbps plan can still feel bad for cloud gaming while a modest plan over a cable feels fine.
Try the Wi-Fi button with a ping around 35 ms. A connection that was comfortably "great" on cable slips into "playable" because of the extra delay, even though nothing about your internet plan changed. That is the usual real-world story.
Cloud streaming shows up in subscriptions in two different ways. Some services bundle it as a perk: certain tiers of the big console and PC subscriptions let you stream games you do not own on a phone, tablet, TV or laptop. Others, like GeForce NOW, are cloud services first and often let you stream games you already own from supported stores. Many have a free or entry level with limits such as shorter sessions or waiting in a queue.
What each tier includes and costs changes often, so read the current plan page before paying. The useful question is not "which is cheapest" but "do I have a connection and a screen that suit streaming, and are the games I want actually available there?" Our break-even calculator can help with the money side.
These steps cost nothing and help more than a faster plan.
Use a cable if you can. A network cable from your router to your TV, PC or console removes the biggest source of random delay. If you must use Wi-Fi, use the 5 GHz network, which is usually less crowded than 2.4 GHz, and sit in the same room as the router.
Pick the nearest server. Many services choose automatically, but some let you select a region. Closer is better.
Keep the household quiet. Pause big downloads and cloud backups while you play. In the demo above, the "others" slider shows how quickly spare bandwidth disappears.
Mind your data cap. A high-quality stream can use many gigabytes per hour. If your plan has a monthly limit, choose a lower quality tier.
Cloud gaming suits slower or story-driven games, couch play on a TV, and trying a game before you commit to buying it. It is a weaker fit for fast competitive games where a few extra milliseconds decide the result, and for anyone on mobile data or a plan with a small cap. Most services offer a free tier or trial, so test your own home connection before you pay for a long plan.