For a while I had much fun figuring stuff out. Then it became so passive. After a few weeks I finally unlocked GroundWaterPumps, and i guess things will be interesting again, but i'm burned out. It really is too slow. An idle game that needs focus? I am confused.
You have every right to add a money option. It is on a separate page and there are no pop-ups. None of that slippery marketing stuff. But with this focus problem, i guess it became pay2win (by accident!) anyway.
In the beginning i was really enthousiastic and now i'm really desillusioned. Speed it up and my rating will go up. And now i'm going to try your other games, because you've got talent. :)