After reading all those other replies, you’ll probably think pay to win is a big element and most of the content is locked behind micro transactions. Hear me out: EVERY SINGLE PIECE OF CONTENT EXCEPT SCENARIO CREATOR IS OBTAINABLE I repeat: YOU CAN STILL UNLOCK 99% OF THE CONTENT BY PLAYING ALONE. (By beating all normal plagues on brutal you unlock the neurax worm which unlocks zombie plague and so on) The game itself is both difficult and easy at the same time, with different difficulties, you get to choose how hard the game is. Not gonna lie, some disease types were pretty tough, and I had to follow a tutorial for it, especially on mega brutal. The game also automatically saves whenever you exit the game, combined with no internet connection needed, it’s a pick up and play instantly on the go type of game. However, without multiplayer, you might have to take breaks from the game to prevent getting bored, but since that’s a highly requested feature, I wouldn’t be surprised if I saw a PVP feature soon. Overall, the content is extremely good for a staggering price of only 99 cents, and basically no other purchases needed from there, an instant favorite, and with more updates coming all the time, this is definitely going to stay on your phone for a long time. So, you heard me, go on and buy it, cause I bet you won’t regret it.