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But in crash games I have won good number of times although crash game is mathematical (calculative). If the player knows when to hit the plane or fly, he can make some wins.
Crash games are designed to be mathematical, yes, but that math is rigged against you in the long run. The house always has an edge, always. There is nothing to "know". These are not games of skill where you can analyze it or develop a strategy. Any "wins" you have had are pure luck.
Yeah, no one knows when it will crash, hence that's where you are going to bet. And it's seldom that it will go as high as you predicted and win the game. But it's very hard to make money out of it, as we all know that this is based on pure luck and there are not strategy whatsoever. And that goes with slots as well, although I also did play slots and roulette from time to time.
So I guess the best choice is poker, and there are a lot of poker tournaments around or at least casinos that have poker in their game. And you can developed yourself a good poker if you know how to bluff and strategized as this is more of a skill base games.