At first great even pace up until you have to unlock rooms. You get one maybe two "speed up videos" that are 10 mins which on a 8+ hr unlock is useless. Perks are random and it costs 10 gems to change it. About middle is when things really slow down as unless you pay, you only get an hour of revenue which for me at this point is just over a million and I'm looking at watching multiple ads or setting timers to grind for cash to upgrade what is left and that's just the first location I'm in.