Just when you think you've seen enough match 3 titles, one comes along that's different enough to attract – and keep – your interest. Virus Laboratory is one such game. The principle is simple: you must match up touching 'viruses' on the game board in order to clear them. All the while, more viruses are being pushed onto the screen from below. This process gets steadily quicker as the game progresses until you simply can't keep up and it's Game Over.