Slot machines can indeed be adjusted by casino operators within legal limits. Modern electronic slot machines use computer programs called Random Number Generators （RNGs） to determine outcomes. Casino technicians can modify the theoretical payout percentage, known as the “hold percentage“ or “house edge,“ through software settings. However, these adjustments must comply with strict gaming regulations set by state or tribal gaming commissions. 
Regulatory bodies require that slot machines meet minimum payout percentages, typically ranging from 75% to 95% depending on the jurisdiction. Casinos cannot set machines to pay out below these legal minimums. The adjustment process usually requires physical access to the machine\“s internal computer and specialized security codes that are monitored by gaming authorities.
While casinos can adjust overall payout percentages, they cannot manipulate individual spins or create predictable patterns. The RNG ensures each spin remains random and independent. Regular audits and testing by independent agencies verify that machines operate fairly and within legal parameters. |
