The traffic can be natural or artificial, but the numbers are what matter at the end of the day. Mintdice is doing really well in this area and are improving in a short span of time making them a competitive site in the crypto gambling realm.
Our Alexa rank is improving steadily but we still have a very long way to go. Please continue the support here, it is most welcome. Our immediate goal is to hit #50,000 or better then figure out another goal from there
As Sara has said, we have never artificially manipulated our gambling or traffic numbers once ever. Anything you see is real people. We would rather focus on real development and growth than spoofing numbers which we feel accomplishes next to nothing. Sometimes admins/developers do play but it is almost always to test things, not to spoof traffic, and it is extremely obvious when we are playing.
I'm not entirely clear on your question. Our slot machines have a RTP of 98% or house edge of 2%:
https://mintdice.com/faq/games-general/the-numbers/what-is-the-house-edge
If you are curious about what exactly the current slot payback percentages are in real life at this moment in time, these are accessible but I don't want to waste developers time presently figuring this out. I can make data like this more public later if it is of high interest once our more important concerns are taken care of.
Our slot machine backend math will be changing slightly (in a much more fun manner) in under 6 months ideally. So any raw data provided now won't matter too much as it will become obsolete anyway.