The maximum level attainable by players is originally 50; however, every five levels from this point, Maat will give you a task to complete to prove your worth as an adventurer and raise your level cap through to 99. These quests are sometimes called "genkai", Japanese for "limit".

These quests only need to be completed once to raise the level cap for all jobs, and can be completed on any job (with the exception of "Genkai 5", see below).

• In Defiant Challenge ("LB1" or "Genkai 1") from 50 to 55.
• Atop the Highest Mountains ("LB2" or "Genkai 2") from 55 to 60.
• Whence Blows the Wind ("LB3" or "Genkai 3") from 60 to 65.
• Riding on the Clouds ("LB4" or "Genkai 4") from 65 to 70.
• "LB5" or "Genkai 5" from 70 to 75:
  • Shattering Stars for all original Final Fantasy XI, Rise of the Zilart, and Chains of Promathia jobs.
  • Achieving True Power for Puppetmaster
  • A Furious Finale for Dancer
  • Breaking the Bonds of Fate for Corsair
  • Survival of the Wisest for Scholar
  • The Beast Within for Blue Mage
• New Worlds Await ("LB6" or "Genkai 6") from 75 to 80.
• Expanding Horizons ("LB7" or "Genkai 7") from 80 to 85.
• Beyond the Stars ("LB8" or "Genkai 8") from 85 to 90.
• Dormant Powers Dislodged ("LB9" or "Genkai 9") from 90 to 95.
• Prelude to Puissance ("LB10" or Genkai "10") from 95 to 99.