I’m trying to work out if there is a way to create a game in Miro where users try to spot a hidden item in an image.

The idea is that I place a photograph on a board which contains a hard-to-find item. The users then study the photograph and mark where they think the item is. It’s a simple game. The easiest way to achieve this would be to allow the users to place a comment marker on the image in the specific location. However, as far as I know there is no way to hide comments from other users on the board. Which means as soon as someone correctly pinpoints the item the game is spoiled for everyone else.

The other method I considered was adding a grid of invisible shapes in front of the image and allowing people to vote by picking the shape covering the correct area. But votes are anonymous so there’s no way to tell who got the correct answer.

Does anyone have any other ideas how I could achieve this?

Thanks