The Lineage 2 you remember, a simulated MMORPG experience. Welcome to the dream.drizzlx, creator

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L2jSimLayer · v1.0.21 · single-player or multiplayer

A 7-strong party formed for Blazing Swamp — Swordsinger, Bishop, Prophet, 3 Hawkeye, Silver Ranger

A balanced defence — the placement brain sized a mixed party to the field's 20 mobs

A 8-strong party formed for Forest of Mirrors — Warlord, Shillien Elder, Bladedancer, 2 Sorcerer, 2 Spellsinger, Spellhowler

The Argos guardians resist daggers — the placement brain dropped that damage type and fitted a nuke party instead

A 9-strong party formed for Catacomb of the Branded — Swordsinger, Bladedancer, Paladin, Bishop, Prophet, 4 Gladiator

The catacomb dead resist magic — the placement brain dropped that damage type and fitted a melee party instead

A 9-strong party formed for Giant's Cave — Bladedancer, Shillien Elder, Swordsinger, Prophet, Sorcerer, 4 Spellsinger

Try it

Looking for buffs?

Visit the sim buffers at any town gatekeeper and type .buffme. Try it yourself — click the button below.

Aeynlaven Prophet 74

Nyrissae Shillien Elder 72

Kharuk Warcryer 75

Ilythiel Elven Elder 71

P. Atk. 142

P. Def. 296

Atk. Spd. 300

Speed 115

The floor

Catacomb of the Branded.

This is a flood map. We drop a seed in the entrance and walk every cell the engine says is reachable from it — 576,760 of them across thirty-nine rooms in the entire catacomb. This is what the sims see.

Under the hood

162,968 lines of code, and counting.

The simulation is 162,968 lines of Java across 947 files — the Party Manager, the pathing, the economy and the world that holds them. Another 205,842 lines exist only to test it, and 109,201 more explain why the code does what it does.

162,968Lines of code, one deterministic world
205,842Lines of tests, so nothing breaks quietly
109,201Lines of comment, the why not the what
31,132The Party Manager — who joins, what they fight
13,093Geodata — the ground, and crossing it

Read the wiki

Everything we've built, written down.

The wiki is the source of truth for how this world behaves — the party system, how groups get composed, how they decide to move on. It grows as features land.