# Why do we have to resize the screen in LibGDX

In a lot of the libgdx tutorials that I have took until now, I am told to resize the screen of the game using the SetToOrtho() of the orthographic camera. However, I don't get this part. Why do I have to resize the screen and make the sprites look bigger when I can just make the sprites themselves big at the first place?

• Just a ballpark guess: it is more efficient then having the user manually resize the sprites. – JDSweetBeat Feb 7 '17 at 16:17

You're not actually "resizing the screen" with setToOrtho. You're building an orthographic projection matrix that takes into account the size of the screen (note the source).