A demonic threat has emerged from the shadows of Great Kourend. As of today, Old School RuneScape players can face off against one of Gielinor’s fiercest new foes—Yama, the Master of Pacts—in a brand-new high-level boss encounter that promises brutal combat, rich lore, and game-changing rewards.
Jagex has officially launched this major update to Old School RuneScape as of May 16, 2025, expanding the fan-favorite Great Kourend storyline and plunging players back into the heat of the Chasm of Fire—where a demonic warlord has risen to power.
👹 Who Is Yama, Master of Pacts?
Yama is no ordinary boss. This fiery minotaur demon, armed with a monstrous axe, wings, horns, and hooves, commands an army of fanatical Disciples. He’s a being of unrelenting power and the successor to the dark legacy of the Judge, defeated back in the 2021 quest A Kingdom Divided. Now, Yama seeks to shatter the balance once again.
You’ll need to be fully geared, fully prepped, and fully committed—because once you enter the Chasm, there’s no turning back.
🔥 New Boss Fight: Enter the Chasm of Fire
Yama is housed deep beneath Kourend in the Chasm of Fire, an infernal dungeon brimming with heat, lava, and danger. The boss fight can be attempted solo or with friends, making it perfect for both hardened PvM veterans and organized clan raids.
Expect high-intensity mechanics, punishing phases, and a need for top-tier gear and strategy. This isn’t just another boss—this is an endgame experience built to test your limits.
🎁 Yama Boss Rewards: What’s in It for You?
Defeating Yama isn’t just about glory—there’s loot, and lots of it. Here’s a taste of the exclusive rewards on offer:
- 🩸 Demon Tallow – A key crafting material for the powerful new Surge Potions.
- 📜 Chasm of Fire Teleport Scroll – Make return trips to this fiery zone fast and efficient.
- 📖 Grimoire Page – Unlock mysterious new lore and magical potential.
- 🛡️ Crimson Lovakite Mining + Oathplate Armour – Discover a brand-new mining and smithing area in the Chasm, where you can gather Crimson Lovakite, a rare mineral used to forge the new Oathplate, a formidable armor set designed for high-level warriors.
These additions breathe new life into PvM and skilling alike, offering long-term goals and fresh incentives to explore Kourend like never before.
✅ Requirements: What You Need to Get Started
To face Yama, players must have completed the A Kingdom Divided questline. This ensures you’re narratively and mechanically ready to confront the demon lord and reap the rewards hidden in the Chasm of Fire.
Recommended:
- Maxed or high-level combat stats
- Best-in-slot gear
- A solid PvM setup or raid team
- Willingness to sign a demonic contract with your soul (…maybe figuratively)
📱 Available Now on All Platforms
Old School RuneScape is available now on PC, Steam, iOS, and Android, complete with cross-platform progression and play on PC and mobile.
