If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
In this game there will be a grid of sushis and you need to pair up adjacent sushis so that no two pairs contain the same types of sushis. There are a total of 4 types of sushis. Use the mouse to click the space between two sushis to pair them up.
This game is played by mouse only.