Despite being a co-op game, this can be played solo quite easily. Not that the game itself is easy, as it is pleasantly challenging, but that the control layout suits single-player just as well as multiplayer. Controlling two characters is still a very interesting idea! Keeping an eye on both screens seems like a difficult thing, but after a while, it becomes second nature. The visual design is very good, with a calm color palatte and a well-done parallax effects.
Really impressive work!
Please check out and rate my game. =)