Players are free to create, build, and mod within Minecraft if the branding usage guidelines are followed. Fan art, logos, videos, and screen shots are acceptable as long as they are not used to falsely represent Mojang Minecraft assets.  If you intend to use any portion of the name in relation to services, products, or distribution, you must adhere to the following requirements. 

Mojang's terms of service and brand guidelines are designed to let you know in plain terms what you can and cannot do with your game, the Mojang brand or Mojang assets.

• Mojang account Terms and Conditions
• Minecraft Terms of Use and Brand and Asset Guidelines
• Xbox terms of use can be found on Xbox.com
• Scrolls Terms of Use and Brand and Asset Guidelines