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Built for Ragnarok M players

Know your build before you spend the Zeny.

Save complete character loadouts, inherit account-wide progression, and take your build into the MVP Battle Lab.

Your saved builds and progression stay together across every planning session.

Coverage
Jobs, skills, gear & monsters
Method
Transparent modifier pipeline
Outcome
Build decisions you can verify

Your account, your build

Sign-in features
Turn game data into your character.
The public database explains each mechanic. Sign in to save how those mechanics combine on your account, then test the result.
Sign in to get started

Build planner

Ymir's Notebook

Save character slots with jobs, equipment, skills, runes, and progression in one reusable loadout.

Sign in to use

Combat simulator

MVP Battle Lab

Deploy an eligible Ymir build against MVP encounters and inspect actions, buffs, damage, and battle logs.

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Account progression

Permanent bonuses

Track Adventure Handbook, job unlock, Guild Blessing, and Aesir bonuses once for every loadout.

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Build sharing

Shareable showcase

Publish a clean, player-friendly build showcase while keeping the mechanics and loadout details attached.

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Set progression once

Shared bonuses flow into every saved character.

Compare without rebuilding

Switch loadouts while preserving their exact inputs.

Keep the math visible

Trace the effects behind every simulated result.

From question to confident build

Every answer keeps the game mechanics attached.
Start with what your character uses, follow the exact modifiers, and test the result against the encounters that matter.
01
Research the mechanic

Find resolved skill formulas, item effects, rune changes, restrictions, and target-specific modifiers in player-friendly language.

Browse skills
02
Assemble the build

Bring jobs, equipment, progression systems, and inherited effects into one loadout without flattening away their conditions.

See what's planned
03
Test the outcome

Compare average hits, criticals, DPS, defense, and time to kill against real monster profiles and dungeon groups.

Choose a target

Readable combat math

See why the number changed.

A final damage value is useful. A breakdown that traces equipment, buffs, target properties, criticals, resistances, and skill scaling is better.

  • Preserve race, size, element, class, and skill-specific qualifiers.
  • Keep equipment, buffs, and progression effects in clear stages.
  • Keep every stage deterministic so results can be repeated and checked.

Damage pipeline

How a result stays explainable

Deterministic
Build inputs

Stats, equipment, skills, runes, progression, buffs

Target profile

Defense, race, element, size, reductions, HP

Verifiable result

Average hit, critical hit, DPS, time to kill, and the complete modifier breakdown.

Preview optimizer
Keep your next upgrade attached to a real build.

Save your character, account-wide bonuses, and combat results in one place—then return whenever your gear or goals change.