article_snippet.sent: On each board, one of the squares is a slightly different shade of the same colour and the aim is to find this odd square by tapping this odd square with your finger or clicking this odd square with the mouse.
article_snippet.sent: Players get a point for every correct square identified, but if Players click or tap the wrong square Players lose a point.
article_snippet.sent: Plus, players get just 60 seconds to find the odd square on each board before the timer runs out and the game ends.
article_snippet.sent: Although the game appears relatively simple, and starts with a board of just four coloured squares (left), the game quickly grows (right).
article_snippet.sent: There are eight levels, and as a player progresses the squares change orientation or add borders to make it harder.
article_snippet.sent: There are eight levels, and as a player progresses the squares change orientation or add borders to make it harder.
highlights_snippet.sent: Board grows to up to 81 squares and differentiation is subtle each time .
  