So, bottom line, if you want to buy the first miner available, you have to grind the games for a solid 4-5 hours. At this point you will have the ~4000 sats to get the first miner. When you buy that miner, it will (at the current pool) take you 6 months to get your 4000 satoshi back.
So, if you spent 24 hours straight grinding these games, you could buy 5 miners (with racks). Then, after six months (it will actually be longer than 6 months, because your miners will lose power as the mining pool gets bigger. Realistically, it will be more like 8-10 months) you can cash out a whopping 20k satoshi. OR, you can sign up on countiply, and get 20k satoshi by spending 10 minutes taking a survey. There are plenty of sites that will allow you to get 20k satoshi per week with much less effort than it takes to get 20k on this site in 8 months. Save yourselves the time. I got 20k satoshi on coinpot in, like, two weeks.