According to this guy and this post
https://bitcointalk.org/index.php?topic=1727679.msg17289459#msg17289459 it is impossible to collect satoshi. Game is looking nice, but i did some small upgrades on first miner and now he is mining 7 satoshi/hour and other 3 are mining 10 satoshi
Also, i did some math, if you want to upgrade 1 miner you need 13K satoshi, with 40sat/hour you will need at least 4 months to upgrade all miners
Not to mention adsense and bitcoin....
About the low payment rates, it doesn't discourage me, I would think stranger if they offer fast very good rewards to be true.
I upgraded all the 4 machines and it's producing 11 satoshis per hour, later I upgraded another one and it is producing 15 satoshis per hour. It's possible to buy more machines too, it costs 2320 satoshis.
It's a nice game, developers could create a thread here.