The invention provides an electronic gaming machine (1) comprising an electronic game controller (4) and a display (7) that shows a first game array (11) and two or more second game arrays (30). Each second game array (30) is associated with a respective designated predetermined position (33) of a plurality of predetermined positions (13) on the first game array (11). The appearance of one or more special symbols (25) in one or more of the designated predetermined positions (33) causes the electronic game controller (4) to make each second game array (30) associated with the one or more designated predetermined positions (33) available to the player for play simultaneously with the first game array (11).