L2Shinsekai is a private Lineage II server built around the High Five experience, with a SubAcu Base +3 system and a modernized Salvation client using Protocol 140. The server aims to balance familiar gameplay with updated features and varied character progression. Players can choose and retain skills from subclasses to create customizable builds, while daily rewards, Daily Missions, Pliege Missions, and a Hunting Pass provide additional goals and rewards as they play.

Rates are set at x5 for experience and skill points, x2 for Adena, spoil, and quest rewards, and x1 for item drops and several other activities. Automatic events include TvT, Capture the Flag, Deathmatch, PvP Arena, and hourly boss fights, with scalable rewards. Strix-Guard anti-bot and anti-cheat protection is also featured. The website offers server information and a wiki covering rates, mechanics, NPCs, and classes, alongside live rankings for players and clans. New players can download the client, server patches, and an updater, and vote on partner sites to earn Vote Coins redeemable in the Vote Shop.