Oh, and the code is a very minor adaptation of an ETH Shrimp Farming Game. You can read about that here: https://medium.com/taipei-ethereum-meetup/ether-shrimp-farm-analysis-e92ab76dc22f. Use Google translate to translate this into English. You can look at that code and see there are almost no changes, just changed the name of the contract to BNBMiner, plus one or two other minor changes. And that article clearly shows that eventually the contract runs out of ETH (or BNB in the case of BNBMiner).

Stay away from this garbage.

While this project may not be a rugpull type of scam (as far as I can tell), it is indeed a Ponzi. Think about it - if 100 people put in 10 BNB each, the contract would have a total value of 1000 BNB. Let's suppose no one puts in any more BNB. These 100 people are each expecting to receive 3% of 10 BNB (= 0.3 BNB) every day FOREVER. Where does this BNB come from? The only possible answer is new investors putting in BNB. No new investors = no more BNB to pay original investors = project implodes.

I asked this very question on the BNBMiner Telegram channel. "The Developer" responded by calling me an "illiterate troll" and gave some ridiculous answer about "this is the way the world works"" and then he banned me. This is classic behavior of a Ponzi operator. So while this guy may not be a rugpull type of scammer (as far as I can tell), he is most certainly running a Ponzi scheme that, like all Ponzi schemes, will eventually implode. And he's a douchebag with an anger management problem who is obviously trying to hide something. I wouldn't touch this project with a ten foot pole.