Every machine is free before 1.0 · one machine stays free from 1.0; each extra machine is US$30/month.

zlink is free.

Connect servers across machines and it’s US$30 per machine a month, from the second machine. Your first 30 days of multi-machine use are free.

Players, cores and developers are never counted. Development and production count the same way.

ONE MACHINE
Free

Run as many zlink servers as you like on one PC or VM, for development or a live game. No key needed.

  • All five server languages
  • All client connectors
  • Commercial use allowed
LARGER STUDIOS
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SLA, source escrow, long-term support versions and priority fixes under a separate support agreement.

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What it costs

SetupConnected machinesPer month
Developing on your PC, many servers in Docker1Free
A small game on one server1Free
Lobby and game servers on two machines2US$30
An indie MMO on four servers4US$90
A studio on twenty servers20US$570

Questions

How do you count machines?

A machine is one physical computer or VM. Everything on it, containers included, is one machine. We count the machines that the servers of one service run on at the same time. Kubernetes counts nodes; managed container services count running instances.

Do I need a license key?

Not on one machine. To connect a second machine, register a key. Free keys come with a GitHub sign-in and are already inside projects you create with the Initializr.

What happens if I stop paying?

Your servers keep running. Versions you received while subscribed stay licensed for your machines. New versions and extra machines need a subscription.

What does the usage report send?

Only when a service runs on two or more machines, once a day: a random service ID, your account and key IDs, the machine count, the zlink version and the OS type. No game data, player data or code. One machine sends nothing.

Can zlink stop my servers?

No. A missing key or extra machines only produce a warning. The one thing zlink refuses is a second machine joining a service that has no key at all.