A first-person infrastructure sim where ports, power, fault domains, RSTP and BGP do real work, not flavour text. Readable for newcomers, honest for engineers.
Early Access out now Uptime is in Early Access on Steam, Windows, macOS and Linux. The free demo is still available if you want to try the first hour first. Get it on Steam.
WindowsmacOSLinux
01 Hands on the hardware
Uptime drops you onto the floor of your own cloud provider, first person. Buy the servers, carry them to the rack, seat them with a satisfying click. Run the cable yourself: pull it off the spool, find the port, watch it lay across the floor with real sag. Power on. Sign your first customer.
Underneath all of it is a real simulation. Every server, switch, cable and port is a live entity in a deterministic engine, not set dressing, not a bar filling up. When something breaks, it breaks because the model says it should.
02 What makes it Uptime
You own the whole stack: the metal, the network, the services you sell, and the customers who bet their product on staying up.
These aren't income tickers. They're named tenants who bet their product on staying up. Reputation is the currency: slow to earn, gone in a moment when you break a promise, and the bigger the customer the harder the fall.
Your customers spin up VMs, object storage, managed databases, Kubernetes and load balancers, each one infrastructure you actually operate, with a control plane to keep alive and agents on every host competing for real compute.
Ports, power, fault domains, oversubscription, spanning tree, BGP and MTBF are the model, not labels on a progress bar. Cable a redundant link wrong and either spanning tree saves you, or the floor drowns in a broadcast storm.
Diegetic mentors walk newcomers in, and one key toggles jargon mode: the whole interface flips between plain language and the real terminology, on the same underlying systems. Learn the real words by playing.
03 For the engineers
Here's what's under the hood. Ignore the depth and still win — or turn the training wheels off and lean all the way in.
Built on a deterministic Rust engine. The renderer only ever shows you what the engine already decided — nothing is faked for the camera.
04 Media
05 Play it now
Uptime is in Early Access on Steam now, Windows, macOS and Linux. Build a cloud provider from a garage up, and help shape where it goes next. New to it? The free demo still lets you try the first hour before you buy.
06 Devlog
Uptime is out in Early Access on Steam, Windows, macOS and Linux. Build a cloud provider from a garage to a hyperscaler, with real cables, real power budgets, and customers who notice when you get it wrong. Here is what is in, and how we are building the rest with you.
Read →The free Uptime demo is out now on Steam. Walk into a garage, cable up a cloud provider by hand, and keep your first customers online while the simulation pushes back. Early Access follows on 17 July.
Read →The final sprint wasn't new features. It was making a stranger's first hour hold up: media-correct cabling, a self-limiting hour, honest power and heat, and the boring Linux fix that decided whether day-one Linux was actually true.
Read →