How to use code to make game like minecraft.

Answer 1

Why did you tag html? Minecraft was made with java.

Answer 2

Minecraft may look like a simple game but trust me it is far from simple.

Games programming requires in depth knowledge of a programming language.

If you want to be a games programmer start small. maybe tic tac toe or guess the number? learn the language { c / java } well and it will serve you well later when you do try a 3d game.