The Perfect Tower 2 is one of the most expansive and in-depth idle games I have ever touched. However, the devs have the problem of adding new content without explaining old features. This is mostly seen when you get into ERA, INFINITY, etc. The game throws you in and expects you to know immediately what to do. Also, in the first hour, you can unlock up to 10 new buildings which can be overwhelming when there isn't a clear obvious path on what to start on.