How to setup blender to generate 2d background(s) Okay. Let me describe in detail what I would like to achieve.

I have created a 3d scene that I would like to render so I can use it in my point-and-click adventure game as a background.

I know how to add a camera and set it to ortho and I can set the rendering to 640w 180h but when I renderer it looks pixelated (maybe 300w 80h) which might be because it uses a wrong resolution?

Is there a tutorial explaining what I need to do?

Thanks in advance.
First of all, make sure your render resolution slider is set to 100%,
Also, (forgive me if I'm mentioning the obvious here), but If you're rendering in Cycles, you need to set your sample-count higher, as that may be what's causing the "pixelated" look. A good starting point should be something like 500 samples. See below: