I am surprised that so simple and repeated action can be so fun. In Infinite Tower RPG you do almost the same all the time. Start with choosing the hero - rogue, fighter, knight and paladin. Then watch the first fight, all is automatic. When you survive you get some exp. points so put them into your skills. Then continue again with another fight and again, when you level up, use the exp. points. That's all, only sometimes you buy some ugrade for the money you get. After some minutes it becomes boring, but it's still good fun.