Plague Inc. ($0.99), which I’ve been saying for years now is one of the best dollars you can spend in the App Store, just continues to get better and better. Last month we detailed the new Mutation 15 update which would bring three new scenarios to the game which included the return of the infamous Mad Cow disease; a scenario where the majority of the world’s population has mysteriously vanished making your efforts to spread disease quite complicated; and a near-future scenario where airports are plentiful even in the farthest reaches of the globe which adds a wrinkle to your disease-spreading strategies. Today the Mutation 15 update for Plague Inc. is now available.

Prior to this Mutation 15 update Plague Inc. received the Scenario Creator update back in April which, when combined with the separate Plague Inc: Scenario Creator app allowed you to create your very own scenarios and deploy them to the world for the nearly 100 million other Plague Inc. players to enjoy. Even before all this user-created content was available, Plague Inc. proper offered a staggering amount of gameplay for the price, and it’s remained on my iPhone for the more than 5 years it’s been available. It’s just one of the best games in the App Store in my opinion, and I’m more than happy to continue seeing new content coming for it even years after its initial release.