### Fibonacci System

Fibonacci numbers are a mathematical sequence believed to form the Golden Ratio and to be found in every being in nature. They were introduced in a book published in 1202 by the Italian mathematician Leonardo of Pisa (Fibonacci). Each digit in this sequence is the sum of the previous two digits, namely 1, 1, 2, 3, 5, 8, 13, 21, and so on. The Fibonacci roulette system is also based on the same sequence.

- Let's say you start playing with 1 unit. Keep playing with 1 unit in the first two games, as we need at least two numbers to start the Fibonacci sequence.
- If you lose the second game, start the third game with the sum of the first two numbers in the sequence (1 + 1 = 2).
- If you win in the third game, go back to the previous digit in the sequence for the fourth game (1, in this example).
- If you lose in the third game, add the previous two numbers in the sequence for the fourth game (i.e., 2 + 1 = 3) and so on.

Pros
- Simple and easy to understand
- It works in short games and provides a certain profit

Cons
- In long-running games, it can cause the bet amount to increase too much
- There is no mathematical proof that the Fibonacci sequence will work in casino games

There is no guarantee that the Fibonacci sequence will work in gambling games, but it would not be wrong to think that this sequence, which can be seen in many things in nature, can also work in roulette. In any case, it is a strategy that does not cause the stakes to increase very quickly in short games and may be preferred by low-budget players.