NOTE: No Microsoft forum--Valve and Xbox are separate, so here is the only place.
http://www.projectspark.comCurrently beta. This goes beyond Minecraft, Mario Maker and probably LittleBigPlanet: You don't create LEVELS, but you create YOUR VERY OWN FULL GAME.
Will be released for Xbox 360 (unconfirmed), Xbox One and Windows 8.1; simply put the dream app for the Microsoft diehard.
May require a PC with any decent i7 & GeForce (recommended NOT minimum). Radeon GPU is also okay (recommended). Check your specs.
May require Xbox Live--you may need your Xbox.
Community montage for who wants:
Whoever's playing it please discuss your experience.
Whoever's interested feel free to discuss.
I'M SO EXCITED TO PUT MY HD GRAPHICS TO THE TEST TO PROVE THAT I WILL BE A DEVELOPER AND I WILL DOMINATE EGYPT WITH MY GAMES THROUGH THIS GAME WEEEEEEEEEE~
If it happens that someone ninja'd me to this game, inform me and link to that topic
All updates lie in Absolute Randomnessosu! progress so far (may not be updated or correct): show Learning to make sig banners myself...: show 
Back to CyanogenMod, Deresute only for now
May have to redo the bottom text colour (and its stroke)
If the signature is only a post ending, but you have a "sandbox" for all your content, then just link to the sandbox and let all the content be in the sandbox. That, is the osu! userpage for me. Now, where was I...
~RT desu