Guesstimaster: how many can you see?
Guesstimaster is a counting game for your phone camera. Take a photo of anything with a lot of the same thing in it: a brick wall, a parking lot, a bowl of grapes, a flock of birds. Say what to count, glance at the photo for a few seconds, and guess how many there are.
While you guess, an object-detection model running on an RTX 5090 graphics card looks for every one of them. Then the count rolls up like a hand tally counter, a dot appears on each one it found, and your guess gets an accuracy score. Guessing 900 when there are 1,000 scores 90%, and so does guessing 9 when there are 10.
Play alone or pass the phone around: everyone locks in a guess before the reveal, and the closest guess wins. Photos are counted and thrown away. Nothing is stored.