What if you had a game which you could only play at certain times a day? Like a game of tag in which you can only tag someone when the last digit of the digital clock (you’d need an official clock) is 7, or perhaps have the game go on for days and you can only tag someone if it’s 8 o’clock (not too early or too late). Or, maybe you don’t even need it to be time based. Perhaps you can only tag someone if you’re outside, or if you’re in the shade, or maybe you can only be tagged if someone around you is wearing a blue shirt! Other games you might be able to play could be the Dart Game, Ninja, or any other similar game.