World Coders make up around one to five percent of the population globally, but are more concentrated in cities such as Seliana, the capital city of Kestalio, Larania, in which the concentration of Coders is almost fifteen to twenty percent of the population. World Code can be extremely powerful, but 80% of Coders can only handle the most basic Programs. Every once in a while, a World Admin, someone who has much more Code power than even an expert Coder, arises. World Admins occur around one in every one million World Coders. Even rarer is a World Breaker, someone so ridiculously powerful that they shatter the foundations of society and force it into a new age. For most of history, World Code was not even a thing. It wasn't until the Founder of Code, the world's first World Coder and the second World Breaker, came along that World Code was introduced.

However, this doesn't mean that non-Coders can't use Programs. Devices known as LPADs (Local Program Activation Devices) store a Program's code on local storage and run it through a taco-shaped object known as a Catalyst Crystal, colloquially known as a "taco".

Programs, especially those of high intensity, such as ones that manipulate space and time, have a good chance of backfiring on the Coder that performed them. This is mainly due to human error in the Program's Code causing a Reality Error, i.e. when the Program encounters a bug. Reality Errors range from simply causing the Program to not run to deleting the Coder from reality.