Mastery
Every activity has a mastery level of its own, from 1 to 99. The more you do one activity, the better you get at it. Each skill also has a mastery pool you can spend on any of its activities.
The short version
- Doing an activity raises its mastery, up to 99. Each mastery level makes that one activity better. The tables below show how.
- Part of all mastery XP also fills the skill's mastery pool. Open the skill and press Mastery pool to spend it on any activity of that skill.
- At 10%, 25%, 50% and 95% full, the pool gives the whole skill a bonus. Spending below one of those lines turns its bonus off until the pool fills again.
- Every activity at mastery 99 counts toward 100% completion.
Which skills have mastery?
Every skill except the fight skills. Attack, Defence, Vitality and Marksmanship level up from fights. Fights have no mastery, so they have no mastery and no pool.
How fast does mastery grow?
- Longer actions give more mastery XP per action.
- An activity with higher mastery earns more mastery XP per action.
- The more mastery you have across a skill's activities, the faster all of them grow.
- Mastery uses the same XP table as skill levels. See Levels and XP.
How does the mastery pool work?
- The skill's pool also gets a share of all the mastery XP its activities earn: 25%, or 50% from skill level 99.
- The pool has a limit. XP that would go past it is lost, so spend it before it fills.
- Spend pool XP from the Mastery pool dialog on the skill's page. 1 pool XP gives 1 mastery XP to the activity you pick. No activity can go past 99.
- The tables below show what each line gives. A bonus only works while the pool stays at or above its line. The dialog warns you before a spend would turn one off.
What does each level give?
An activity's own mastery helps only that activity. The pool bonuses help every activity of the skill. Each skill's page shows the same tables with the pool XP each line needs.
Exact numbers
Each completed action adds this much mastery XP to its activity, rounded down, and at least 1:
( unlocked × total ÷ most + level × activities ÷ 10 ) × seconds × 0.5 × (100 + bonus) ÷ 100 × 100 ÷ 100
- unlocked: how many of the skill's activities your skill level has opened.
- total: all the skill's activity mastery levels added together. most: 99 × the number of activities.
- level: this activity's mastery level.
- activities: how many activities the skill has. A skill with many activities masters each one faster.
- seconds: for gathering, the time the unit really took; for crafting, 85% of the base time on the recipe's page, however fast you work.
- bonus: percent more mastery XP, from the pool's 10% checkpoint.
- 100: a game setting, the same for every activity. A mod can change it.
Every value is read before the action. The pool holds at most 500,000 XP for each activity in the skill. The chance to spare materials can never go above 60%, from all sources together.