A rebuy tournament is one in which you have the opportunity to buy more chips during the event. In a standard ‘freezeout’ tournament, when you run out of chips, you are out of the tournament. In a rebuy tournament, you can (with some restrictions) buy more chips.

Here are some facts about rebuy tournaments:

There is a ‘rebuy period’ at the beginning of the tournament. A typical rebuy period might be the first hour of the event (until the first break starts). Once that period is over, no more rebuys are permitted.
During the rebuy period, there may be a fixed number of rebuys available, or an unlimited number.
If you run completely out of chips, you will automatically be offered a rebuy (if one is available).
At any time when you have chips, you can click on the dealer tray and select the ‘Add More Chips’ option to rebuy.
If you’re not eligible for a rebuy (because you’ve reached the maximum number of rebuys, or because there is a maximum number of chips where rebuys are allowed), you’ll get a message to that effect.

In general, you may rebuy using the ‘Add More Chips’ button in the dealer tray any time your stack is less than or equal to the starting chip stack.

The rebuy may cost any amount, but generally costs the same as the original buy-in, and gets you the same number of chips that you got for your original buy-in.
There may also be an ‘add-on’ available at the end of the rebuy period. Typically this will be during the first break. An add-on is just one extra rebuy. The add-on will not be automatically offered to you. To take the add-on, wait for the message that ‘Players are now on break’. Click on the dealer tray and select the ‘Add More Chips’ option. In general, the add-on is available no matter how many chips you have.

The add-on may cost any amount, but generally costs the same as the original buy-in, and gets you the same, or higher number of chips that you got for your original buy-in.
The prize pool and payoffs will not be announced until the rebuy period ends, since the prize pool increases with each rebuy.
Note that many of the rules described above are ‘typical’ or ‘normal.’
We will make every effort to clearly state any deviations from typical rules, but the exact details for each tournament will always be posted in the tournament’s lobby or under the ‘Tournament Info’ tab in that lobby.