Tap a tile to flip it over. You get two guesses each turn. Try to match the same image on both guesses. If you don't make a match, the cards will flip back over. Make sure to remember which images you saw.

After the game you'll get a score and gain XP based on how quickly you cleared the board. You can choose from three different themes, or to play a one or two player game. In a two player game, whoever makes the most matches wins!

How to play Concentration on your phone

To play Concentration easily any time, you can add it directly to your phone as an app. It’s a great way to play without worrying about losing your game save data.

For iOS devices, simply tap the "Share" icon in Safari and select "Add to Home Screen". For Android devices, tap the “Menu” icon and select "Install App".