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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.