I'm pretty sure you can just add the switch -frames 1 or something like that (anything less than a certain number is just a test mode that disables all warning screens), and through the process of some crazy math, 2 is subtracted from 1 and it shows -1 frames, which is impossible, so the game plays normally, although it's technically in a test mode.
If you put any number other than 1, it exits after that many frames.
don't shoot me if i've got this one wrong.