All skills, with the exception of Constitution, start out at level 1. Constitution starts out at level 10, so the player has a fair advantage against monsters. A player has 40 life points per Constitution level. Players can advance a skill to level 99 (except for Dungeoneering, which can go to level 120); after that, they can increase their experience up to 200,000,000 – but gain no more levels for doing so. A player’s combat level begins at level 4. The maximum combat level a member can reach is level 200. See the highscores for the relative rankings of the different skills.
Every skill has a unique jingle that plays when the skill is levelled up. This jingle changes with each skill to be slightly more complex whenever the skill reaches level 50.
Skills can be temporarily boosted or lowered by using certain items or equipment, such as Capes of Accomplishment, beer, potions, certain foods, or a summoning familiar if the player is a member.
If a player is in the top 2,000,000 players in a skill, is of level 15 or greater in that skill, and is a member they will appear on the hiscores.