Welcome to the world of modding! Minecraft is a single or multi-player game where you can create and build your own 3D environment, or explore and survive in a 3D world. What you can do is only limited by your imagination!
With the EpicMC Modly™ platform, you can programmatically create 3D structures and games inside of Minecraft. This is known as a Minecraft mod which is short for "modification".