Project Spark—a game creation suite that lets players make platformers, RPGs and much more—might be Microsoft's secret weapon for the Xbox One. Today, you can sign up to be among the first to try it out as long as you're using Windows 8.1.

If you're running the latest update to Microsoft's OS, you can go to the official Project Spark site and submit your name for the global beta. From Microsoft:

"Project Spark" is an endless adventure where everything is customizable. Jump into an open world sandbox where players can create their own games, movies, stories and more and then share them with family, friends, and the world.

• Play what other creators have made and take part in unlimited adventures.

• Make games while playing with the revolutionary Crossroads mode.

• Bend, shape, and mold worlds with sculpting and beautifying creations with paints and biomes.

• Master the easy to use brain system to add behaviors to anything and bring creations to life.

"Project Spark" is the ultimate interactive playground for gamers of all ages, delivered as a free digital download with many options for enhancing your creative experience. It's a powerful gaming destination where creation and play live seamlessly together. Walk in to the community's collective imagination and start playing.