Outer Wilds will be an Epic Games Store timed exclusive

The crowdfunded game will be a timed exclusive on EGS as announced on their fig.co campaign page:

Outer Wilds will first be released on XBox One and on PC via the Epic Games Store, with additional platforms coming later. Rest assured that we read all of your comments and our goal is to bring the game to your preferred platform as quickly as possible. We will keep you up to date with the latest info here.

Throughout the development of the game, we’ve welcomed helpful partnerships with Annapurna Interactive, XBox, and Epic to support us and keep our small studio running long enough to ship the game at the level of quality that it is today. Each of these partnerships has enabled us to make the game better and more accessible for everyone who will play it.