The King of the Lion's Den Xtreme 2006 was a Philippine nationwide tournament for the live service MMORPG ROSE Online. The tournament was organized by its Philippine publisher, Level Up! Inc. Its grand finals were held during the Level Up! Live 2006 event dated September 30 and October 1, 2006, at the World Trade Center in the City of Pasay.

The tournament is a series of PVP tournaments. Eight teams, 5 from King of the Lion's Den qualification and 3 from Royal Court qualification, were selected to participate in the grand finals which were held in the Level Up! Live 2006 event.^[1]

The Lion's Den was composed of four tournament seasons which were held from December 2005 to July 2006. On each season, 4 clans from each server battle to determine a champion (1 for Polaris and 1 for Sirius). The server champions competed in the Tala server to determine the season's King of the Lion's Den.

The Royal Court is a voting contest where the public can vote for clans of their choosing.

The event had a prize of ₱100,000 in cash and items for the champion clan, ₱50,000 for the runner-up, and ₱30,000 for the second runner-up.^[2]

The following were the winners of the tournament:^{[2][3][note 1]}

• Champion: InzoRavenloft (Polaris server)
• Runner-Up: Pasaway (Sirius server)
• 2nd runner-Up: Salawayun (Sirius server)

Clan InzoRavenloft was represented by the following:

• Jeffrey Kalinisan
• Mark Anthony Banday
• Rogacion Dela Cruz
• Albert Genit
• John Aeron Garagan
• John Rommel Banday
• Anthony Libres
• Andrew Reymund Chua

Pasaway was represented by the following:

• Mark Jim Dalde
• Anthony Co
• Jezer Amancio
• Andrew Hega
• Jerwin Amano
• Patrick Villaluz
• Jason Directo
• John Carlisleben Gazzingan

Salawayun was represented by the following:

• Francis Borja Circa
• Anthony Martin Chan
• Rex Alvin Roto
• Jul Cea Montaño
• Renan Sison
• Jeremae Doria
• John Rolan Evangelista
• Vicente Pao Jr.

1. This needs confirmation. A Hackenslash report listed Salawayun as 1st runner-up, while the official Level Up! Live 2006 Hall of Champions page listed Pasaway as the 1st runner-up.

1. LEVEL-UP! LIVE: A RevoLUtion in gaming (via da-ma journal post in DeviantArt). September 2, 2006. da-ma (reposter). DeviantArt. Retrieved on 2024-02-18.
2. Hall of Champions – LU! Live 2006 : Level Up! Live. Circa 2012. Level Up! Live minisite author. Level Up! Live minisite. Retrieved on 2023-10-10.
3. Gaming champs reap glory in Level Up! Live 2006. Circa 2006. Alexander Villafania. Hackenslash. Retrieved on 2024-05-24.