Most slots are published as an individual game that enjoys popularity for a little while and then it is forgotten when new games come along. Some slots, however, are so popular with players that developers get back to them after a while to make a sequel or even a few of them. That’s how slots series usually come about. Lately, however, we’ve seen some games that have been envisioned as series right from the get go, such as Playtech’s Age of the Gods or NetEnt’s Fairytale Legends. Either way, slots series are always cool, because they give players a chance to enjoy the game they love but with a fresh design and new features.