The smarter picks in terms of odds are the following games, and you can also see their respective house edge for the main betting options:
Video Poker: -0.05% 2%
Blackjack: 0.43% 2%
Baccarat: 1.06% 1.24%
Craps: 1.36% 1.41%
Ultimate Texas Hold'em: 2.20%
European Roulette: 2.70%
Pai Gow Poker: 2.84%
Yes and no. The objective of mahjong is to be the player with the most points after the final round. It is possible to play the game for money, in which case these points can correlate to money in some way. Mahjong is often played without money, though, in which case the points merely determine the winner.
