Look past the Greek gods and myths, and you will notice something else affecting your experience in the Temple of Iris slot: colour. Every shade on the screen is there for a reason. The artists and designers pick each hue to stir specific feelings, to pull you deeper into the game. For someone playing in the UK, this visual strategy operates subtly in the background. It affects how exciting the game feels, whether it appears reliable, and that gentle push to spin just one more time. The game’s colour scheme works because it taps into real brain and cognitive processes...