The majority of bonuses will fit into the two types listed above, but there are a few that don’t – specifically refer a friend bonuses and comp points.
Refer a Friend Bonuses
This bonus does what it says on the tin. Should you refer one of your friends (or anyone you know) to a particular casino, and that person then goes on to make a deposit and play, then the casino will credit your account with a small bonus. However, the player you refer must not be living at your address or using your computer, as in the majority of cases only one player per household/computer is allowed.
Loyalty Comp Bonuses
Should you have had a particularly bad session or series of sessions then it can often pay to contact the casino and see if they will place some free credits into your casino account. Many casinos will do that as a free comp and to reward your loyalty and compensate you for your bad run of luck, so if you do not ask you will not receive!
Bonus codes
Finally we should probably also mention bonus codes. Some casinos will require you to enter a code into the cashiers section of their banking page when you are making a deposit to claim a bonus, whilst others will do it automatically. Again, the best advice we can give you is to read the T&C’s