Game-creation sandbox Project Spark will not need an Xbox Live Gold subscription to access, Microsoft has clarified, a change from the company's previous stance on free-to-play releases.
Xbox 360 free-to-play games such as Happy Wars and Ascend: Hand of Kul have required an Gold subscription - even to access offline modes.
Project Spark will launch first on Xbox One, with versions also headed to Windows 8 PCs and Xbox 360.
An Xbox One beta is due in January 2014 and is expected to be nearly complete by that time. Features exclusive to the Xbox One version will include Kinect-enabled performance capture, body animations, facial expressions and voice acting.