I voted for Blackjack. Unlike all other casino games, blackjack is unique in that the house edge is completely dependent upon the decisions made by the player. For example, the completely self-destructive player theoretically could play at a 100% disadvantage, hitting all hands until he busted. Here, the odds are constantly changing. Roulette, for example has a built-in house edge of 5.26%. Also, note roulette balls and dice have "no memory." Just because red may have come up on a roulette wheel ten times in a row, doesn't mean that the color black is now "due." The color black has the same chance of appearing on the next roll that it did before. Just because a 7 was rolled in a craps game ten times in a row, doesn't change the odds one bit of it being rolled or not rolled again.
However, cards do have a "memory." Take this extreme example: In a single deck blackjack game, four players all receive a blackjack on the first round. Well, on the second round, the chances of any player now getting a Blackjack have dropped to zero since all four of the Aces are gone!
For example, the content of the deck is now to the player's disadvantage since a player is paid 3 to 2 for any blackjack. And as you may have guessed, if the deck held an abundance of Aces, this is to the players advantage.
Basically, when many 10's and Aces have been played, the deck favors the house. When many small cards relative to the number of Aces and 10's have been played, the deck favors the player. The one advantage the house has over the player is the player must act first. For example, the player may bust with 23 points and it may turn out the dealer later too busts, with 24, a higher total than what the player busted with. However, the player's bet is already lost.
Here are some basic strategies which you can follow to lower the house edge :
1. You should always hit a soft 17 (i.e. ace-6), split aces and 8s, double down on 11, and stand on a hard 17 (or greater).
2. You should never split 5s or 10s and never stand on 12 through 16 if the dealer is showing a 7 or higher.
3. Never take insurance. Unless you're keeping track of the ratio of aces and 10-cards remaining in the stack of cards still to be played (i.e. the shoe), the odds are against you. So,
"Insurance is a loser's bet".
4. You can memorize the Basic Strategy Card before playing Blackjack to decrease your losing streak at the game upto 0.5%, which makes Blackjack the best game to play in the casinos.