It is difficult to say which game is more profitable than the rest, as this depends on whether you choose a game of strategy or of chance. If you are good at games of strategy, the bets you make may be more profitable in poker or Blackjack. You can always check the RTP of the games. This indicates approximately how much money from the bets that are being returned. A high RTP indicates that the player will be likely to receive profits more easily compared to games with a low RTP.