Thanks for you feedback and for playing my game.
Yes you are right, since the cards disapears if they are not the same (except for the bunnies that stay always in place) and the memory part for the vegetables probably needs something else in their design. But for the bunnies, there is only one present on the board when the game start. And only when you find two of the same vegetables, another bunny is added to the board. I didn't have enough time to animate it, but you can see a card appears on the board when it's the case and this is the bunny card. So you always can remember the place of all the bunnies but the first one that is hidden by default somewhere ^^. I think with an animation that is different from the other card, adding a bunny is the thing that is missing to have a clearer design. I also was thinking about adding a "farmer" card to avoid having vegetables created every 3 turns. But I had to keep the gameplay simple in order to finish the game dev ^^.
FIY : my girlfriend really loved your game and spend multiple games on it !! Really nice work ^^ !