I think the concept is interesting and is a great take on the theme! However, it just doesn't work, at least as a single player game, as it's not mechanically deep. It's just a game of chance which isn't very fun. You could make it so that the player has to look closely at the glass to see which one is fake, and they would have to complete it in a certain amount before all the grass breaks. Whatever the case, there has to be some player agency or it'll just be a guessing game.
Also, during a game jam you should focus on carefully building and polishing a few levels instead of rushing a lot of levels. You can add more after the game jam if you like the idea.
Still, I think you did an amazing job and I hope you make more games in the future! :D