These games have a negative expectation regardless of how few or many games someone plays.
Nevertheless, this does not stop gamblers from having false beliefs (the "gambler's fallacy") that their actions or "way of playing" will influence the outcome.
Baccarat (punto banco)
Caribbean Stud Poker
Casino war
Craps (though some believe the use of dice control can beat the game)
Fan-Tan
Faro
Keno
Let it ride
Pachinko
Pyramid Poker
3-card poker
4-card poker
Red Dog
Roulette
Sic Bo
Spanish 21—without counting
Texas Hold'em Bonus Poker