A number goes up. That is the whole game. It is agony.
There is no board, no cards, no reels. A number starts at 1.00x and it climbs, and at some unannounced moment it stops climbing and the round is over. You have one button. You can press it whenever you like. That is the entire crash casino game and it is, without much competition, the most stressful thing in this arcade.
It should not work. Described on paper it sounds like a loading bar. In practice it is a small machine for generating dread, because a rising number that could die at any instant is one of the purest anticipation devices anyone has ever built, and it does not need graphics to do its job.
The genius is that it never tells you anything. There is no warning, no wobble, no ominous music before it goes. One frame it is at 3.41x, the next frame it is gone. And you were about to click. You were literally about to click.