Fortunately for us, they did manage to create some appealing visuals and tried some original additions to help it stand out. This game was released in 2018 by this up-and-coming developer and they have taken a very popular concept. Expect stacked wilds, cascading reels and a free spins mode to keep us entertained. Rainbow Wilds is a cute-looking slot by Iron Dog Studio that takes us to the lush fields of Ireland where we are greeted by some leprechauns as the reels spin.