Thanks for the rating! :)
I decided to put the numbers only on the front of the bots to try to create situations where you have to identify the suspect using only their appearance if the number is not visible. Though, it would probably be worth testing a version with numbers on both sides, maybe that would be better.
And yeah, I ran out of time to add sound which was unfortunate. I'll probably add some if I decide to work on this more after voting is over.