Follow the ongoing development of the Lineage II Classic Secret of Empire server core. Each milestone moves the project toward a stable, faithful foundation.
Percentages track how far each system has been verified against official Patch Secret of Empire behavior, on top of a working server foundation. They are held back deliberately: the alignment work is confirmed against official data, but has not yet been tested in a live game session.
Development notes, release details, and project updates.
Gludio Siege has been implemented based on official behavior. It is different from other castles siege mechanics and is threated by NC Soft as Beginner Siege. Now it is matched official behavior completely as it works on L2OFF. Fixed:
We had already audited items once, so this was meant to be a formality. It wasn't. Across eight batches: 290 of 309 item combinations were simply missing, equip cooldowns were wrong, and chests were expiring while their contents sat there indefinitely. Items aligning is finished for now, but wil be spot-checking just in case.
Some cleanup on Sieges. Fixed:
It turned out the spawn reconciler had never once compared heading, so 132 spawns were facing the wrong way. Fixed, and then we re-checked spawn coverage from three separate directions to be sure nothing else had slipped through the same gap.
The Olympiad is not working initially on L2OFF server because it used cross-server olympiad. So fixed not only Java behavior but the L2OFF itself:
The enchant rates are not in any data file, they are compiled into the server itself. So we read them back out of it, step by step, and wrote the whole table down. Enchant stones and the blessed potion stack on top of those base chances exactly as official has them.
Thirty items carried the wrong combat stats. Separately, 317 items official lets you enchant could not be, and 67 it forbids could be. Both lists sorted, and each bow got its own reload back instead of one derived for all of them.
Aden and Schuttgart had lost chunks of the ground they are supposed to own. Clan halls are now paired by geometry rather than by list order, which fixed their banish points, and the Aden side gates that had been standing open are shut.
This was the big one. We wrote out all 770 options official defines, rebuilt the pools behind them, and corrected a fee table that had drifted. 84 options still need translating, and until they are done those minerals stay untouched: a half-filled pool quietly skews the odds everyone rolls against.
Class skill trees corrected against official. Quest level gates are enforced rather than advisory, and a class transfer finally pays out the exp and sp it is supposed to.
Buy lists and multisells now match official down to the taxed rows, which took a few attempts to parse properly. Thirty-six core multisells were missing outright; those were generated and wired up to every NPC that should be offering them.
The M.Atk exponent was 2.2072 where official uses a flat 2. It looks like a rounding difference and behaves like anything but once your matk climbs. Critical rates now round the way official rounds, accuracy and evasion are corrected, and we confirmed stat truncation by putting a live character side by side with official's numbers.
Every NPC stat synced to official, and the same for player, summon and servitor base stats. Servitors had been spawning with 0 MP, which is the sort of thing that hides in plain sight for years. Parity confirmed in game afterwards.
Every drop, spoil and box table a player can actually reach now matches official. The multisell assortments and merchant lists sitting behind them got the same treatment.
Landing chances were still carrying a 10% floor inherited from a much later chronicle. Gone. Three abnormal types were stacking when they should have replaced each other, damage-over-time had a stray tenfold magic critical burst, and death drops were uncapped.
A pass over ensoul runes, armour sets, transformations, agathions, talismans and bracelets. Most of it already matched official, which was a welcome result for once. Nineteen official talismans had somehow become unequippable along the way; they work again.
NPC behavior now follows official's own AI scripts rather than an approximation of them, which changes how they pick targets and call for help. A fair number of NPCs had no skill list at all. Exp and SP rewards were resynced across 578 of them.
Built the tooling to compare our spawns against official's, then started working through what it found. Fixed:
The starting point. Prototyped reverse engineering tools for official L2OFF Secret of Empire files. Parsed all available data and established the foundation for further development.