"Fixed win line" is a term referring to a specific number of win lines that are pre-determined on a slot. In contrast, some slots give you the option to choose the number of win lines yourself or even adjust them flexibly. When playing a slot featuring fixed win lines, players must make at least one bet per win line in order to enjoy a potential win. It is important to note that a higher number of active win lines also means a higher stake, but at the same time, also leads to a greater chance of winning.