You already knew that Project Spark is a free-to-play game - but is that "free" as in "free with Xbox Gold"? The answer, happily, is no.
"You do not need an Xbox Live Gold account to play Project Spark," community manager Mike Lescault wrote in a Reddit thread last night. Asked whether this would apply to the Xbox One and Xbox 360 versions, or just the PC version, he added: "You will not need a gold subscription to play Project Spark for free on any platform." Case closed.
New to Project Spark? It's a world and game creation toolset based on Kodu Gamelab for Xbox Live Indie Games, which allows you to sculpt geography using Xbox SmartGlass controls and even boss the components around by way of Kinect. Aoife went hands-on with Project Spark over the summer, deeming it an impressive piece of work - if you'd rather not bother with the editor, you can treat Spark as a traditional exploration-driven RPG, care of the semi-randomised Crossroads mode.
As you probably already know, Microsoft currently operates a free Xbox games plan - Gold subscribers receive two downloadable Xbox 360 games a month. The manufacturer has proven elusive about how this service might "evolve" on Xbox One, but Xbox Live product manager Pav Bhardwaj has suggested that it may factor into Microsoft's broader free-to-play plans.
Read about all currently available Games with Gold via our free Xbox games list.