Question

Suppose you created an online game in HTML5/JavaScript. All the code would be downloaded into the user’s browser, and they would run the game.

How do you stop someone from copying the game onto their computer, and injecting functions and modules to cheat? For example, they could write a function that auto-aims at the nearest enemy sprite for example.

Is there any fundamental way to protect people from doing this sort of thing by designing your game code in a certain way?

Answer 1

What is stopping someone from copying
the game onto their computer, and
injecting functions and modules to
cheat?

Nothing.

Is there any fundamental way to
protect people from doing this sort of
thing by designing your game code in a
certain way?

Nope.