I mean, uh, yeah, it is a bit enjoyable, however it somewhat uh gets repetitive.
It is sort of unique, kind of falls under the same mechanic Cookie Clicker does...
Speed, uhhhh, yeah, it is balanced but cost isn't what it really says.
Theme, yeah, it does do fit the theme, yeah, although 1 hour makes you get confident² and possibly miss out on the real important part of the game.