WWE features a match called the Championship Scramble in which none of the wrestlers are eliminated. Two wrestlers start the match and every five minutes another wrestler enters until all five participants are present. After the last wrestler enters, there is a predetermined time limit. Each time a wrestler scores a pinfall or submission, he becomes the interim champion. Such reigns are not recorded as title reigns. The winner is the wrestler who scores the last pinfall or submission before the time limit expires. The Unforgiven pay-per view of 2008 is arguably the most prominent showcase of this match type, as all three world titles were contested under a Championship Scramble match.