Next comes simulation-based testing. Using specialised software, auditors run the game hundreds of millions, even billions, of times. This gathers a vast dataset of results. The data is then processed to calculate the empirical RTP. This must lie within a strict statistical confidence interval of the theoretical RTP. The RNG is put through a battery of randomness tests. For 40 Super Hot, verifiers would also verify the fixed 40-payline win calculation engine works flawlessly under every possible symbol combination. Only after every component passes does the testing house issue its formal certificate. This certificate is tied to a specific, unalterable version of the game software.