This halloween event is some kind of misunderstanding... not only it is cash grab, but also makes game completely unplayable. Good job devs! Giva that scarecrow a few more millions of attack points, will ya?
Round 50. After you defeat the king, the option in the shop changes name to "Your games" and starts over from stage 1. For now, it would seem it's endless from there
 "Forge of Gods"){kind=icon}
 "Hexiom Connect"){kind=icon}
 "Thrones of Fantasy"){kind=icon}