Sharpen your weapons and prepare for a fight in the brand new Castle Dungeon level!
Adventurers, it’s time to sharpen your blades and light your torches; the long-awaited Castle Dungeon has opened its gates! Within the shadows, horrific experiments and stitched abominations await, along with new nightmare-fueled bosses and gear to claim.
🏰 New Level: Castle Dungeon
A brand-new stage has been added – the Castle Dungeon! Brave its dark corridors and fight through terrifying foes: Humic Slimes, Horrific Test Subjects, Stitched Abominations, Jailers, Spray Automatons, Watchers, Crystal Mounts, and Executioners.
Complete Castle Bridge on Nightmare difficulty (or have a previous completion) to unlock the underground dungeon path. In future adventures, you can choose to enter via \[Castle Dungeon] after the third level instead of going through the full castle. The Public Test Branch updates alongside this release.




⚠️New Enemies
From left to right - Spray Automaton, Humic Slime, Horrific Test Subjects, Stitched Abomination, Jailer, Watcher, Executioner, and Crystal Mount.
👹 New Bosses
Two new powerful bosses now stand in your way: Warden and A Mysterious Shadow!
⚔️New Gears and Treasures
Strengthen your build with all-new drops and crafting materials:
Weapons
Musket - Suppressor
Turbo Lance - Bombarder
Two-handed Weapon - Ripper
Bow - Nightmare Echo
Staff - Nightmare Vision
Single-handed Weapon: Nightmare Shard
Armor
Nightmare Robe
Enchanted Brass Armor
Treasures
Mana Saw Blade Shard
Fallen Mage's Cloak
Alchemy Materials
Highly Pure Ether
Black Soul Stone
💸Special Discount Incoming!
On August 21 - September 4, Lost Castle 2 will be available at 20% off! It’s the perfect chance to grab the game, dive into the new Castle Dungeon update, and invite your friends to join the adventure.
🎮Treasure Vault Public Beta
The Public Test Branch for the new treasure vault is still ongoing, and we will also synchronize the \[Castle Dungeon] level content to the Public Test Branch. We will continue to maintain this test branch until the content experience in the public test version is fully adjusted and refined.
To join the Public Test Branch, you can:
Go to Lost Castle 2 in your library
Click the gear icon ⚙️ or right click on the game and select properties
Go to the beta menu and choose beta test
We welcome all players to participate in the testing and provide feedback and suggestions to the development team, assisting them in refining and optimizing the experience of this major update!
🐦 Follow us on X: @LostCastle2Game
🌌 Check out our BlueSky: LostCastle2Game
👾 Revived Reddit Community: r/LostCastle – Join the discussion, share your tips, and show off your best loot!
Changed files in this update