During which one of the reels is completely filled with wild symbols

During which one of the reels is completely filled with wild symbols. The bonus symbol which only appears on reels 1, 3 and 5 is a mouse in a bottle. These three images start an additional on-screen bonus game. In the meantime, you must take part in scientific experiments. It has a fun storyline and interesting game features. Many other games saxygame1688 is a popular classic game.