Co-op mode?

As seen in the title, I hope that the developers of this game see this. I play this game on the IPhone 6s and it runs really smooth. I love the game for its exceptional graphics and its creativeness. I would recommend one thing though, and that would be that you should add a co-op multiplayer of some sort. It would make this game THAT much better. Theres nothing wrong with the multiplayer servers that you have now, its just that a co-op would make the game even better. Other than that, this game is 5 out of 5.

Boom196 about Radiation Island