Basically, playthrough on bonuses means that you have to wager the bonus you received X number of times. That X depends entirely on the casino, but it's usually between 20x and 50x.
The wagering requirements, also known as the playthrough, will be given as a number such as: 20x. This means that the total amount of $200 must be multiplied by 20 for a total of $4000. The wagering requirement then is to wager $4000 on the allowed games prior to a cash out. A wager is simply the amount of money you bet on each spin, when you play a fruit machine for example. So if you are betting $1 a spin, you will need 4000 spins to complete or fulfill the wagering requirement.
Go directly to Low Playthrough Casino Bonuses listed below.
Essentially the playtrough was created to prevent players from abusing the bonus provided by a online casino online. Indeed in the past many players called bonus hunters, cashed the bonus after a few hands at the games and left the casino to switch to another causing theme significant financial problems.
While it may seem like a catch to the apparent free money deal, such playthrough requirements are necessary for the casino to stay in business. Due to the generosity of online casinos who offer players free money in exchange to players is necessary for casinos online to apply what's know as wagering or playthough requirements. These requirements are structured and in place to offset the risk that a casino takes by offering bonuses to it's players.
The most important thing to keep in mind if you're evaluating a bonus at a casino you whant to play is to read carefully the terms and conditions for that bonus which will include details on the wagering / playthough requirement for the particular bonus. Usually the link to the section that within a casino site that will provide the conditions of the bonus will be in either the promotions / bonus page of the casino site or alternatively somewhere below where there is mention of the bonus.
Some exclusive bonus blackjack, craps, roulette and other "games of strategy", while others allow bonus bets on these games, bonuses will leave you free to choose what game to play but "strategy games" have a lower value in the ranking to reach the playthrough.
In conclusion, it's absolutely vital that you read the Terms and Conditions of any casino before joining it. If you're not going to take the time to read the entire T&C, at least read the section about wagering requirements.
Low Playthrough Casino Bonuses