Phoenix Point, the new game from the co-creator of the original X-Com: UFO Defense, is out now and reviews are mixed. The developer announced earlier this year that Phoenix Point would be coming to the Epic Games Store instead of Steam, and there were also plans to release it simultaneously on Xbox Game Pass for PC and the Windows Store. But developer Snapshot Games now says it “dropped the ball” and can’t say when those versions will be ready.

“We know that some of you are waiting for our release on Microsoft Xbox Game Pass for PC and the Microsoft Windows Store,” wrote a member of the Snapshot Games staff on the game’s official forums. “The fact is we dropped the ball. We were exceedingly busy getting the game itself ready, and being inexperienced with Game Pass and the Microsoft Store, we simply had not properly prepared the groundwork to get the game released on time on these platforms.”

The post goes on the state that the complexity of Microsoft’s certification and a legal review surprised them, and have created unforeseen delays. That’s why the game isn’t available there yet.

“We are currently unable to make the same content available on Microsoft’s platform that is available to players on other platforms. Since we want to make sure all players have access to all versions of Phoenix Point regardless of where they choose to play, we need to get this working before we can release.”

They added that there is no expected time of arrival at this time. That makes it a de facto Epic Games Store exclusive.

Of course, Phoenix Point was never supposed to launch on the Epic Games Store in the first place. The original Fig crowdfunding campaign promised a Steam release for the strategy game. Polygon has reached out to Snapshot Games, Microsoft, and Fig for more details.

Update: Reached for comment, Fig says it was not involved in the Microsoft certification process.

“Fig offers value added services along the way,” Fig told Polygon in a statement. “When it comes to business deals, their agreements align themselves with the developer in that we trust they will make the best decisions for their own economics and they’ll participate alongside them.”