These auditors check the Random Number Generators (RNGs) to make sure every card drawn, every reel spin, and every dice roll is fully random. They also certify the Return to Player (RTP) percentage for each game, so you can view the theoretical payout rate. When you play a slot from NetEnt at Playjonny, you’re playing the same game that’s been tested for fairness, not some shady in-house creation. This transparency is a fundamental part of a licensed casino. It directly affects how secure you can feel when you play.