Project Spark, the unique game creation tool for Xbox One, will be free for all customers whether they have a Live Gold subscription or not, according to a company representative.
Responding to a fan's question on Reddit, a community manager said "you do not need an Xbox Live Gold account to play Project Spark".
Many had assumed the service would be locked behind Xbox Live Gold, which is currently required to access many free internet services on Xbox such as YouTube and Internet Explorer.
Bearing a philosophical resemblance to Sony's LittleBigPlanet, Project Spark offers "an infinite number of ways to play build and share", according to Microsoft.
The software allows people to sculpt their own worlds and create play structures within. Finer details can be tuned via a number of methods, including SmartGlass-powered iPads and tablets, as well as the next-generation Kinect sensor.
The game, in development at the relatively unknown outfit Team Dakota, was recently demonstrated in an extensive, one hour Livestream video.
Project Spark is due for release on Xbox One, Xbox 360 and PC. No release date has been set for any of the platforms.