Experience

Experience (EXP) measures how much a character has fought. It comes as Base experience, which raises the Base Level, and Job experience, which raises the Job Level (see Base and Job Levels). You earn it by killing Monsters, finishing quests and exchanging Prize Medals from minigames, and each new level needs more than the last. The character selection screen shows your Base experience as an exact number.

The official game guide explains that experience is handed out by damage: whoever takes the most of a monster's HP gets the most experience. If a monster with 100 HP gives 100 experience and you dealt 65 damage, you get 65. When several players hit the same monster, its total experience grows by 25% for each extra attacker, a rule meant to discourage kill-stealing.

For a boss, the player who contributed most (dealt and took the most damage) becomes the MVP and gets an MVP item or bonus experience, unless that player died in the fight. The MVP item goes straight to the inventory, or drops on the ground if you are over the weight limit. See MVP Bosses.

In the current game the experience from a monster depends on the gap between its level and yours. Monsters somewhat above you give the most, while much weaker or much stronger ones give far less. Each player gets EXP according to their own level, no matter who lands the kill, and MVP bosses always give 100% before other modifiers. The table below is shortened from iRO Wiki's full list.

In game, a monster's name changes color when you hover over it, showing whether it is more than 10 levels above you, close to your level, or more than 15 below.

A party leader chooses how experience is split. With Each Take, members only get experience for monsters they damaged, using the normal rules. With Even Share, experience from every kill is divided equally among the members. Only members who are online and in the party share it, and a character who dies during the fight gets nothing.

On iRO, Even Share also gives a bonus of 20% per member from the second one on, so each person gets less than a solo kill but the party kills faster. The table is shortened from iRO Wiki:

Many quests reward experience (see Quest System and Eden Group). One reward bundle can never give more than one level, however large it is, so it is best to turn quests in right after a level-up, when your experience bar is near 0%. Equipment that boosts monster experience does not affect quest experience.

iRO Wiki's example: a non-transcendent level 60 character needs 69,000 Base EXP for the next level. With 10,000 already and a quest worth 90,000, it reaches level 61 with 31,000 toward level 62.

• Shoe cards such as Am Mut (Demi-Human) or Gajomart (Plant) give +10% EXP from one monster race.
• Some gear adds a few percent, for example Poring Sunglasses (5%) or Adventure Clover (8%).
• The TaeKwon Master's Blessings skills add EXP from the chosen targets on their day (see TaeKwon Kid, Star Gladiator and Soul Linker).
• A Battle Manual adds +50% EXP for 30 minutes; a Job Battle Manual adds +50% Job EXP only and stacks with normal manuals.