A game with one input and one output
Limbo is about as stripped-down as a casino game gets. You type in a number — a target multiplier, say 2.00x. You place a bet. The game instantly generates a random result. If that result is equal to or higher than your target, you win, and your bet is multiplied by the target you chose. If the result falls short, the bet is lost. The whole thing takes a second.
There is no board, no cards, no animation to sit through and nothing to react to. There is not even a cash-out button, because there is no window in which to press one. You make one decision — how high to aim — and the round resolves. That is the entire limbo casino game.
For a complete beginner this simplicity is a gift, because it makes the fundamental bargain of gambling impossible to hide behind. You are being asked, directly and in a single number, how much risk you would like to take. Everything else in this guide is about understanding what that number actually means.