Originally starting with Quake II, Kaasjager later rose to widespread popularity with the release of a self-made highlight montage (or "frag video") from the game Challenge ProMode Arena,[2] which showcases his unique aggressive style of playing.
Kaasjager played Painkiller for esports team Fnatic. Kaasjager won two world championship titles in 2004, one with CPL[3] and one with ESWC,.[4] In 2005, Kaasjager competed in the 2005 CPL World Tour, in which he won at five out of nine stops and earned $223,000.[5] Kaasjager was named the Most Valuable Player of the tour. He played in the finals of the CPL World Tour against Fatal1ty but ended up losing.[5]
When the Cyberathlete Professional League, World Series of Video Games, and other tournaments dropped Painkiller in favor of Quake 4, Kaasjager took a break from professional gaming starting from June 21, 2006, to pursue his studies for the upcoming college semester. He made a comeback to competitive gaming on April 30, 2007, participating in the World of Warcraft competition of the World Series of Video Games representing Fnatic once again.
After retiring, he has been known to play Challenge ProMode Arena, Warsow,[6]QuakeWorld,Quake Live, and evading Thunderfury binding drops.
In 2017, at age 32, Kaasjager returned from retirement and finished in second place at the Quake World Championship 2017.[7]
