I just loved the game, I can simply say that it is so good that I want to play it non-stop, but ... I would like to share this feeling with my brother, maybe in a future update, could you put the option for two players?
Sadly, I don't have the time to implement multiplayer into this game, as it would require a ton of work. It's something I would like to do for a future project, however. When that will happen though, I am unsure.
As for this game in particular, I may have to make a new update soon however it will only be a bug fix update due to some major issues that have popped up recently.