brain training

The purpose of every round of the game is to open all panels with hidden images on it for a certain period of time.

The game gives you a number of panels with a specific image on the hidden side of it. Every image has its double/twin somewhere on the other panel. But you can open only 2 panels at the same time and they will stay opened for a few seconds or less.

If the images on both opened panels are equal, such panels will stay opened for the rest of the round. It means, you don't need to search for such image anymore. It also gives you a bonus seconds for a round time to be a little longer.

If the images on both opened panels are different, such panels will be closed back after a second or less. It means, you need to search further. It also steals a seconds from round time and prevents you from winning the game.