Let me add my 5 cents to that:
I agree there are some deceptive aspects of this game.
The MP award for missions does not seem to be allocated evenly through the range, for example. I have seen through the last 538 missions that the awarded HP is 31.3% of the range instead of 50%.
Absolutely ALL percentages are WAY off.
Under 1000HP you don't find crystals in missions 50% of the time and above 1000 it's not 80% either, you can be happy if you get crystals 50% of the time above 1000.
Furthermore if the reward for a mission says for example 10-50 Satoshi, the average you get isn't 30, but below 20 and if it says 1-10 crystals the average (for the 50% of the time where you get any) is about 3.
If I reach 1000 HP then the award apparently changes from HP to referrals. I have not seen many complaints recently about the benefit so maybe it has been worked out.
Same thing, you find FAR less referrals than the percentage indicates, on level 10 missions where you're supposed to find one per 10 missions, you can be happy if you find one per 20 missions.
Furthermore, those referrals don't pay you anything at all, IFFFFF they are actual users, then they are entirely inactive users.
I have 7 referrals from the "regular" referral program, where NONE of them remained inactive from day one, some left after a week or two, but ALL of them gave me at least a few Satoshi.
After I reached 1000HP I found 3 referrals from missions so far, and all 3 remained from day one at ZERO in all columns.
What they are worth you can tell if you try selling them, the site offers you 10 Satoshi and 2 crystals for selling a referral you found from a mission, go figure.
Buying 2000 HP from 0 currently generates less than 180 sats/hr (the yield for 1000 HP is not stated but I assume it is less than 30 sats considering 660 HP is giving less than 20)
I'm on 1000.8HP, got there the free way, haven't bought any afterwards and virtual BTC mining pays (at current course) 21.79477594 Satoshi an hour.
The rest you can calculate from here.
I've actually asked in here for the formula, how HP above 1000 relates to Satoshi mined per hour, so I could do the math, but the question has remained unanswered and that's a red flag for me, not to invest any money, but take only the free stuff.
Still, over all, this is a faucet that does pay and it is an entertaining game.
I enjoy playing it, even if the net payout even on 1000HP is hardly worth mentioning.
I'm retired, I have nothing better to do, I sit at the computer surfing the web all day anyway, so I have a VERY active schedule on this game, almost 24/7 having ALL missions from levels 9 through 14 (for all 3 coins, BTC, LTC and Doge) running simultaneously, plus running virtual mining at least 16 hours a day and I'm getting a net value of roughly 50 cents a week out of it.
Or in short: If you're in this for the money, you're in the wrong place, if you want an entertaining game, rather than monotonous captcha solving and you accept a real low payout in exchange for the fun, this is the place for you.