Tilt
Tilt is borrowed from poker terminology and it describes a mental state where frustration, anger, or emotional upset causes you to abandon rational decision-making. A player on tilt increases bet sizes, takes riskier gambles, ignores bankroll limits, and makes decisions driven by emotion rather than logic. It's the fastest way to empty your account.
Tilt usually follows a bad beat or a string of losses. You were "supposed" to win that hand. That bonus round gave you nothing. You're "owed" a win. So you crank up the bet size because surely the next spin has to pay. It doesn't. Now you're down more. Now you're betting even bigger. This spiral can destroy a session in minutes.
Recognising tilt is the first step. If you notice your bet sizes creeping up after losses, if you're feeling angry at the screen, if you reach for your wallet to reload after hitting your limit, you're on tilt. The solution is simple and painful: stop playing. Walk away. Close the app. The slot doesn't care about your emotions, and the math doesn't bend because you're frustrated.