As to eCOGRA testing reports, Microgaming slots always have the same return no matter what casino you play Thunderstruck 2 in. This’s so because the company actually sets the RTP on the development stage of each machine and casino owners simply don’t have such access. But you should realize that 96.65% of money has been paid out to all Thunderstruck 2 players within a casino but how much cash a particular gambler can win at a time can’t be calculated.