OSRS Yama Boss Guide
In Old School RuneScape, Yama is a duo-focused challenging boss that requires a solid strategy and understanding of its mechanics to defeat. Released on May 14, 2025, this fight consists of various phases that each present unique challenges, and knowing how to navigate these can help you defeat it quickly.
Players looking to take on this opponent need proper preparation, from selecting the right gear to mastering specific attack patterns. Yama tests even experienced players with its complex mechanics and punishing special attacks.
In this article, we'll explore the gear you'll need, the boss's location, and the essential mechanics that you must master to defeat the latest and newly added boss in OSRS.
Also Read: OSRS Zulrah Boss Guide
Requirements
Access to Yama requires completion of the ”A Kingdom Divided” quest. This Master-level quest unlocks the Chasm of Fire where Yama resides.
While there are no other formal requirements to attempt the boss fight, Yama is an endgame challenge designed for high-level players. Combat stats in the 90s, top-tier gear, and experience with complex boss mechanics are strongly recommended for any chance of success.
Yama Location
Yama is located in Yama's Domain, also known as the Chasm of Fire. This dungeon sits in the north-west corner of Shayzien and houses various demons led by the mysterious entity Yama.
Players can access the dungeon through several routes:
Fairy ring code DJR: Teleports you just south-east of the Chasm (requires previous visit to Great Kourend)
Kharedst's memoirs: Teleport to the Graveyard of Heroes by reminiscing "History and Hearsay" (requires Tale of the Righteous completion)
Battlefront teleport: Brings you north-west of the chasm
Skills necklace: Teleport to the farming guild, then run south-east (bring antipoison for lizardmen along the route)
Also Read: OSRS X Marks the Spot: Complete Quest Guide
Gear Recommendation
Your gear selection is crucial for defeating Yama. Use Tumeken's shadow along with full Ancestral gear. If you don't have an Ancestral hat yet, a Torva full helm works as a substitute. Keep at least one weapon switch available, preferably melee. This becomes essential during specific phases when melee attacks prove more effective.
The Purging Staff is another key item. Its special attack works effectively against cores that spawn during later fight stages. While not necessary, using a Bandos Godsword spec at the beginning can lower Yama's defense for a slight advantage.
Bring a Sanfew or Antidote potion. Yama inflicts poison damage similar to Zamorak, hitting for substantial amounts if left untreated.
Fight Mechanics
Yama follows a complex multi-phase pattern with specific mechanics in each phase. Understanding these mechanics is crucial for survival.
Also Read: OSRS: How to Get to Fossil Island?
Initial Phase
The arena contains orange/red and black/purple glyphs. After each attack type, you must step on the corresponding glyph - orange after magic attacks and black after ranged attacks. In duo encounters, only one player needs to stand on the glyph to protect both players.
Yama alternates between magic and ranged attacks, starting with the opposite element of the more abundant glyph type in the arena.
Special Attacks
Yama uses various special attacks throughout the fight:
Ranged Attack: Shadows engulf players when Yama snaps his fingers
Magic Attack: Flames envelop players when Yama snaps his fingers
Flame Wall: Requires proper timing to run through without taking damage and having prayers disabled
Teleport Phase
At 66.6% and 30% health, Yama teleports players to a narrow strip where they must face the Judge of Yama. This involves crossing stepping stones while avoiding fireballs. The Judge uses targeted AoE attacks once players reach its platform.
Void Flares Phase
Yama summons Void Flares that must be destroyed before their timer expires. If not killed in time, they heal Yama and damage players. The Purging Staff's special attack is crucial here, turning 5-tick casts into 2-tick casts against the flares.
Enrage Phase
At low health, Yama enters an enraged phase with significantly increased defense bonuses. His magic defense notably increases from -30 to +81.
During this phase, Yama launches three fireballs in a line, with the outer fireballs expanding in an hourglass pattern. Players must move perpendicular to this attack to avoid damage.
Loot and Rewards
Defeating Yama offers a variety of valuable drops, making this boss worth grinding for consistent profit. Players can obtain the Yami pet, a rare cosmetic reward that showcases their accomplishment.
The Oathplate armor set remains among the most sought-after drops, with each piece being individually rare. Combined with other unique items like the Soulflame horn, Yama provides both consistent income through common drops and the potential for substantial payouts with rare items.
Item | Quantity | Drop Chance | |
|---|---|---|---|
 | Oathplate shards | 4-12 | 1/16 |
 | Forgotten lockbox | 1 | 1/30 |
 | Dossier (Yama) | 1 | 1/40 |
 | Soulflame horn | 1 | Rare |
 | Oathplate helm | 1 | Rare |
 | Oathplate chest | 1 | Rare |
 | Oathplate legs | 1 | Rare |
 | Yami | 1 | Very rare |
Yama also drops various consumables, equipment, runes, and resources. These include high-tier combat potions, food items, high-value runes, and crafting materials.
Final Words
Yama is one of OSRS's toughest challenges, requiring precise execution of mechanics and optimal gear selection. The fight demands mastery of glyph switching, void flare management, and careful navigation of teleport phases. While primarily designed for duo teams, skilled players can attempt it solo for an extra challenge.
“ GameBoost - Mustafa Atteya has been writing about gaming and esports since 2023, specializing in competitive game content and player improvement guides. At 24, he brings both hands-on gaming experience and professional SEO writing expertise to the GameBoost team.”
