Knockout
Knockout tournaments (also known as Bounty tournaments) pay a cash prize for every player you knock out of the tournament. This cash prize is the 'bounty' on the player and is separate from the tournament's prize pool. This means that players with many knockouts can still take home some money, even if they do not make it to a winning position in the tournament. The last player of the tournament - i.e. the winner - will have his bounty credited to him as winnings.
Progressive Knockout
The bigger the catch, the better the prize! While regular Knockout pays a player the same fixed amount for each knockout, Progressive Knockout places a different price on each player's head. In this variant, you win 50% of the bounty each time you knock out a player, and the rest gets added to your own bounty. As the tournament progresses, players with many knockouts will subsequently have higher bounties, and will be worth more to knock out! The last player of the tournament - i.e. the winner - will have his bounty credited to him as winnings.
Win the Button
In a regular poker game, the dealer button is moved around the table in a clockwise manner. However, in this format, the button will be passed to whoever wins the round. Effectively, this gives them the advantage of acting last in the game. Win the Button is an action-packed variant that rewards players that actively go for the win.
