I think that thinking of a good theme is the hardest, and you have done it, and it is doing very well!
Thanks, it is really encouraging to hear such words....or read them rather :p
Thanks for checking my game and giving it a try! It does mean a lot to me. Also i think your game was fun!
More on that in a comment i just left on your profile.
It took me 18 hours to decide the theme (and it was not a good enough theme, just use because to reserve development time)
So I understand that this topic is very difficult to decide a good theme. (Not just suitable, but good enough)