Students are asked to enter values between two whole numbers, demonstrating that these two numbers can be further subdivided. Each guess sends a police dispatch to the area, where a witness would inform the player which direction he believes the suspect had been seen (left or right). There are two levels of difficulty – the easy version lets players guess within 1 decimal place, while the harder requires a more difficult-to-guess 3 decimal places.
The game also has a two player mode, where each student is allowed to hide their badge in a given decimal point (while the other is not looking). The player who finds his opponent’s badge by observing the game’s character behaviors as he makes his guesses wins the game.