Unity pulls nuclear option on cloud gaming startup Improbable, terminating game engine license

A pair of highly-funded gaming unicorns are publicly skirmishing and the deal could have major repercussions for game developers.

Today, UK-based cloud gaming startup Improbable, announced that Unity, a hugely popular game development engine, had terminated their license, effectively shutting them out from one of their top customer sources. If permanent, the license termination would be a significant blow to Improbable, which enables studios to host large online multiplayer games across multiple servers. The gaming startup has raised more than $600 million from top investors like Softbank, Andreessen Horowitz and Horizons Ventures.

Just how many Improbable customers utilize Unity as their game engine of choice through the SpatialOS GDK is unknown, but the two platforms do share some similarities in appeal among small teams looking to innovate. “Unity is a popular engine and that popularity extends to the people using our [game development kit],” an Improbable spokesperson told TechCrunch. Improbable’s SpatialOS platform also runs on the Unreal Engine and CryEngine and can be designed to work with custom engines.

So, how’d this happen?

The way Improbable told it this morning, Unity changed their Terms of Service last month and then, without warning, pulled the rug out from under them. That’s not how Unity sees it though, the company penned a terse blog post in response, alleging that Improbable was well aware that they were in violation of the ToS.

“More than a year ago, we told Improbable in person that they were in violation of our Terms of Service or EULA. Six months ago, we informed Improbable about the violation in writing. Recent actions did not come as a surprise to Improbable; in fact, they’ve known about this for many months,” the post reads.

Unity developers using SpatialOS spent the day complaining about the move and wondering whether their projects in development would have to be completely reshaped. While the folks at Improbable also seemed unsure about this detail, Unity clarified in its blog post that SpatialOS projects that were live and in production would still be supported.

Unity’s Terms of Service isn’t exactly the most lucid reading material, but the section in question titled Streaming and Cloud Gaming Restrictions seems to lay out a fairly clear rebuke of what Improbable does.

You may not directly or indirectly distribute the Unity Software, including the runtime portion of the Unity Software (the “Unity Runtime”), or your Project Content (if it incorporates the Unity Runtime) by means of streaming or broadcasting so that any portion of the Unity Software is primarily executed on or simulated by the cloud or a remote server and transmitted over the Internet or other network to end user devices without a separate license or authorization from Unity.

The vagueness of the language does seem to give Unity broad discretion to wield the hammer.

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