Everything you need to know about foe arc. Broken into 5 sections — read them in order or jump to what you need.
In This Guide
- What The Arc Does
- Arc Priority
- Leveling The Arc
- 1.9 Threading Math
- Common Arc Mistakes
What The Arc Does
The Arc is a Great Building that multiplies rewards from every other GB contribution. At level 80, your Arc bonus is roughly 90% — meaning every FP you contribute to any GB pays back 1.9x.
Arc Priority
The Arc is the single highest-priority GB in the entire game. Every FP invested in The Arc pays back through every future GB contribution. Rush to level 80 before touching most other GBs.
Leveling The Arc
Levels 1-30 are cheap — grind them out with self-contributions. Levels 30-80 require guild support and 1.9 threading. Level 80+ is optional; the bonus curve flattens sharply.
1.9 Threading Math
The name comes from 1.9 = 1 + 0.9 (the 90% bonus at level 80). A 1.9 thread means: I put in 100 FP, get 180 FP back via Arc bonus. That's how guilds coordinate GB investments.
Common Arc Mistakes
Leveling past 80 too aggressively. Ignoring The Arc while leveling other GBs first. Not using the Arc Calculator to verify break-even math.
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