Millions of people do it every day. They jump off the battle bus in Fortnite, start a game of League of Legends or log into World of Warcraft to play with friends who may be thousands of kilometres away.
Everything feels immediate. The match loads in seconds. Movements respond instantly. Shots land where they should. Players interact in real time as if everyone were connected to the same computer. But the reality is far more complex. Because behind every match lies a global infrastructure designed to support some of the most demanding digital environments on the planet and that infrastructure consumes enormous amounts of energy.
Most players imagine the work is done by their console or computer, yet most of the operation happens outside the home. Every movement, every shot, every build and every action performed inside the game travels through the Internet to a set of servers distributed around the world. There it is validated, processed and synchronised with the rest of the players all in just a few milliseconds. The difficulty is not doing it once; the difficulty is doing it millions of times simultaneously.
During some special events, Fortnite has brought together more than 15 million simultaneous players. League of Legends maintains a global community of hundreds of millions of registered users. World of Warcraft has spent more than twenty years sustaining persistent universes where millions of characters continue to exist even when players disconnect. To support this level of activity, companies operate globally distributed infrastructures. Data centres spread across North America, Europe, Asia and Oceania. Thousands of servers working in a coordinated way, low-latency private networks, continuous replication systems, load balancers capable of redistributing traffic in real time.
Something similar happens with live sports broadcasts, a World Cup final can bring together one billions simultaneous screens and the infrastructure that sustains it faces the same challenges.
The player experience depends on everything working simultaneously and here a factor rarely mentioned when we talk about video games comes into play: energy.
A large data centre dedicated to digital services can continuously consume between several megawatts and tens of megawatts of power. To put it in perspective, a 10 MW facility can consume as much electricity as several thousand homes — and online video games never sleep. There are no office hours, no real windows of inactivity. While some players disconnect in Europe, others start playing in America or Asia. The servers keep running, the systems keep processing information, the cooling equipment continues removing the heat generated by thousands of processors operating without rest — because the challenge is not only computational, it is also thermal. All that capacity generates heat, and keeping equipment within safe ranges requires complex air conditioning systems that represent a significant portion of total energy consumption.
But the pressure on these infrastructures keeps growing. Artificial intelligence has become a new critical layer within the gaming ecosystem. Operators already use it to detect cheats in real time, analyse suspicious behaviour, identify fraud patterns, optimise matchmaking between players, predict future demand, redistribute resources before problems arise and improve the gaming experience. All of this requires additional processing capacity that increases the energy demand of data centres.
The GPUs running artificial intelligence models today consume significantly more energy than many traditional servers — and as these technologies are incorporated into gaming, the energy density of data centres increases too.
The consequence is clear.
The more intelligent, immersive and connected video games become, the greater the dependence on the physical infrastructure that sustains them — because Fortnite is not just a video game, League of Legends is not just a competitive platform, World of Warcraft is not just a virtual world. They are digital ecosystems that depend on energy, connectivity, cooling, computing capacity and infrastructures designed never to stop. And although for the player everything begins when they press the "Play" button, the reality is that the match started long before.
It started in a data centre.