Webzen has rolled out a fresh batch of content for its idle RPG MU Pocket Knights on December 1st, introducing the Boss Rush and Arca systems.

The newly added dungeon, Boss Rush, challenges players to take down five distinct bosses lurking within the otherworldly Dimensional Rift. Players can gain entry through the Dimensional Rift in Lorencia village and via monster NPCs. Successfully dispatching each boss yields a brand-new progression material known as the Arca Orb.

The fresh progression system, Arca, unlocks once players break into main stage 201. Utilizing the Arca system lets players boost six different stats, powered by the Arca Orbs earned from the Boss Rush. When the Arca hits its highest tier, it levels up, making characters significantly more powerful.

To celebrate the content drop, a special event is now underway. Starting December 1st, the Ruler of the Dimensional Rift event kicks off, rewarding players with Boss Rush Keys—crucial for sweeping dungeons—upon completing Boss Rush clearance missions. Alongside this, the Golden Acorn Harvest Festival runs from December 8th to 26th, allowing players to gather acorns and golden acorns through exploration and trade them for various goods like diamonds and gems.

More details on the MU Pocket Knights content update and events can be found on the official communitypage.