The "maximum wager" is a phrase that indicates the highest amount a player can wager in any particular slot. This value varies with each slot and can be viewed right on the in-slot screen or the instructions. It is important to note that a maximum wager is often required to increase your chance of hitting the highest jackpot or certain bonus rounds. While a higher wager also means a higher risk, a really big win is often best achieved by making a maximum wager.