Back in my misspent youth, my friends and I would often gather around the halved or quartered TV screen to battle it out in classic split-screen shooters like Goldeneye 64, Doom, Time Splitters or Duke Nukem 3D. Of course, whenever someone got fed up with being killed all the time, the arguments would start in earnest. “That’s not fair, you looked at my screen!” “I did not!” Only you did, didn’t you?