Is it possible to disable game drawing?

I’m making RPG like online game , and i have decided to run a simulation of the client game on the server to check for errors and etc. Basically i want to keep all the object exist and running normally but without drawing them on the screen. In other words i want to run the game without drawing It. is it possible?
Thanks in advance

Just deactivate the camera. the game will still have a rendering context, though nothing will be rendered in it. An alternative is to simply set the layermask of the camera to none (0). That way the screen is still cleared but no objects are drawn.

Another option for pure game servers is to run them in batchmode. See the command line arguments documentation page for more details