There are significant penalties for casinos tampering with slot machines. Tampering with machines to alter outcomes or manipulate payouts is considered illegal and can result in severe consequences, including fines, license suspension, or revocation. Regulatory authorities closely monitor casinos to ensure compliance with gaming laws, and any violations are taken seriously. In addition to legal penalties, casinos caught tampering with slots risk losing their reputation and the trust of their customers, which can have long-term financial impacts.