|Released||1 June 2017 (Update)|
|Location||Mor Ul Rek|
The Inferno is a solo minigame that was added to Old School RuneScape on the 1 June 2017, along with an update to the city of Mor Ul Rek. The player must survive 69 increasingly challenging waves, ultimately killing the level 1400 TzKal-Zuk. If defeated, the player has to restart from the first wave. A spiritual successor to the TzHaar Fight Caves, the Inferno was dubbed the greatest solo PVM challenge to date upon release.
In order to access the Inferno, players must give TzHaar-Ket-Keh a fire cape. This is a one-time fee, so after giving a fire cape to him, TzHaar-Ket-Keh will allow players to enter as much as they want.
A Slayer task of TzHaar does not take effect in the Inferno. If the player has previously defeated TzKal-Zuk, it may be chosen as a Slayer task when assigned TzHaar, which will affect all monsters inside the Inferno. The task will also be cancelled in the event the player is defeated, much like Fight Caves. To prevent free practice, the Inferno cannot be accessed on unrestricted worlds. Restocking between waves is not possible and other players cannot enter, although the minigame can be paused by attempting to log out between waves. Purple sweets also cannot be used in the Inferno.
Background[edit | edit source]
According to TzHaar-Ket-Keh, the Inferno was originally a large incubation pool for newly hatched TzHaar to regain memories of their ancestors. The TzHaar found out that the deeper they placed the eggs, the TzHaar emerging from them would gain more memories and knowledge of their old ancestors. Unfortunately, they went too far and completely drained the lava, finding an ancient incubation chamber. They decided to place eggs in there, but it completely backfired and caused the creation of new, volatile volcanic creatures that were extremely aggressive and fought for dominance. The TzHaar struggle against these new monsters and are hesitant to allow humans to tackle them. Similarly to humans, these monsters are foreign to TzHaar, as their names are prefixed with Jal, meaning "foreign" in the TzHaar language.
Monsters[edit | edit source]
There are new monsters encountered within the Inferno. Several of these monsters are similar to Fight Caves counterpart, while others are completely new.
|32||Jal-Nib||10||15||15||Melee (Crush)||4||Attacks the pillars in the room. If they manage to destroy them, they cannot be used for safespotting.|
|85||Jal-MejRah||25||55||120||Ranged||19||Tz-Kih||Drains run energy and combat stats slightly with each attack.|
|165||Jal-Ak||40||95||160||Magic, Ranged, Melee (Crush)||29||Tz-Kek||Attacks primarily with magic and ranged. Its attacks are delayed; it detects if the player is protecting against magic or ranged after three ticks, and uses the opposite style after another three ticks. Spawns three smaller versions of itself on death using each side of the combat triangle (Jal-AkRek-Xil, Jal-AkRek-Mej, Jal-AkRek-Ket).|
|240||Jal-ImKot||75||120||120||Melee (Slash)||49||Yt-MejKot||It can only attack with melee. If unable to attack the player, it will burrow down and pop up near the player to attack them.|
|370||Jal-Xil||125||60||90||Ranged, Melee||46||Tok-Xil||It primarily uses ranged attacks.|
|490||Jal-Zek||220||260||300||Magic, Melee||70||Ket-Zek||It primarily uses magical attacks. It can revive slain monsters in the current round they appear in. The revived monsters have half health and each can only be revived once.|
|900||JalTok-Jad||350||480||510||Magic, Melee, Ranged||113||TzTok-Jad||Uses each combat style with devastating damage, but each hit can be blocked with appropriate prayers. It can summon Yt-HurKot healers when it reaches half health.|
|141||Yt-HurKot||90||100||150||Melee||18||They are summoned when JalTok-Jad is at half health, and heals it until they are attacked. Identical to Yt-HurKot from Fight Caves, but stronger.|
|1400||TzKal-Zuk||1200||260||150||Magic, Ranged||251||The final boss in the Inferno.|
|250||Jal-MejJak||75||100||1||Ground-targeted AoE||10||Four are summoned when TzKal-Zuk falls to 240 health, and they will heal it until they are attacked.|
Wave breakdown[edit | edit source]
Each wave displays which monster will spawn. There are 69 waves in total. From waves 1 to 66 are three pillars which the Jal-Nibs attempt to destroy. Each pillar has 255 hit points. Any remaining pillars by the end of wave 66 are automatically destroyed by the start of wave 67.
Key to shortened names:
- Nibbler: Jal-Nib
- Bat: Jal-MejRah
- Blob: Jal-Ak
- Melee: Jal-ImKot
- Ranger: Jal-Xil
- Mage: Jal-Zek
- Jad: JalTok-Jad
- Wave 1: 3x Nibbler, 1x Bat
- Wave 2: 3x Nibbler, 2x Bat
- Wave 3: 6x Nibbler
- Jal-Ak (Blob) will start to appear in the next round.
- Wave 4: 3x Nibbler, 1x Blob
- Wave 5: 3x Nibbler, 1x Bat, 1x Blob
- Wave 6: 3x Nibbler, 2x Bat, 1x Blob
- Wave 7: 3x Nibbler, 2x Blob
- Wave 8: 6x Nibbler
- Jal-ImKot (Melee) will start to appear in the next round
- Wave 9: 3x Nibbler, 1x Melee
- Wave 10: 3x Nibbler, 1x Bat, 1x Melee
- Wave 11: 3x Nibbler, 2x Bat, 1x Melee
- Wave 12: 3x Nibbler, 1x Blob, 1x Melee
- Wave 13: 3x Nibbler, 1x Bat, 1x Blob, 1x Melee
- Wave 14: 3x Nibbler, 2x Bat, 1x Blob, 1x Melee
- Wave 15: 3x Nibbler, 2x Blob, 1x Melee
- Wave 16: 3x Nibbler, 2x Melee
- Wave 17: 6x Nibbler
- Jal-Xil (Ranger) will start to appear in the next round.
- Wave 18: 3x Nibbler, 1x Ranger
- Wave 19: 3x Nibbler, 1x Bat, 1x Ranger
- Wave 20: 3x Nibbler, 2x Bat, 1x Ranger
- Wave 21: 3x Nibbler, 1x Blob, 1x Ranger
- Wave 22: 3x Nibbler, 1x Bat, 1x Blob, 1x Ranger
- Wave 23: 3x Nibbler, 2x Bat, 1x Blob, 1x Ranger
- Wave 24: 3x Nibbler, 2x Blob, 1x Ranger
- Wave 25: 3x Nibbler, 1x Melee, 1x Ranger
- Wave 26: 3x Nibbler, 1x Bat, 1x Melee, 1x Ranger
- Wave 27: 3x Nibbler, 2x Bat, 1x Melee, 1x Ranger
- Wave 28: 3x Nibbler, 1x Blob, 1x Melee, 1x Ranger
- Wave 29: 3x Nibbler, 1x Bat, 1x Blob, 1x Melee, 1x Ranger
- Wave 30: 3x Nibbler, 2x Bat, 1x Blob, 1x Melee, 1x Ranger
- Wave 31: 3x Nibbler, 2x Blob, 1x Melee, 1x Ranger
- Wave 32: 3x Nibbler, 2x Melee, 1x Ranger
- Wave 33: 3x Nibbler, 2x Ranger
- Wave 34: 6x Nibbler
- Jal-Zek (Mage) will start to appear in the next round.
- Wave 35: 3x Nibbler, 1x Mage
- Wave 36: 3x Nibbler, 1x Bat, 1x Mage
- Wave 37: 3x Nibbler, 2x Bat, 1x Mage
- Wave 38: 3x Nibbler, 1x Blob, 1x Mage
- Wave 39: 3x Nibbler, 1x Bat, 1x Blob, 1x Mage
- Wave 40: 3x Nibbler, 2x Bat, 1x Blob, 1x Mage
- Wave 41: 3x Nibbler, 2x Blob, 1x Mage
- Wave 42: 3x Nibbler, 1x Melee, 1x Mage
- Wave 43: 3x Nibbler, 1x Bat, 1x Melee, 1x Mage
- Wave 44: 3x Nibbler, 2x Bat, 1x Melee, 1x Mage
- Wave 45: 3x Nibbler, 1x Blob, 1x Melee, 1x Mage
- Wave 46: 3x Nibbler, 1x Bat, 1x Blob, 1x Melee, 1x Mage
- Wave 47: 3x Nibbler, 2x Bat, 1x Blob, 1x Melee, 1x Mage
- Wave 48: 3x Nibbler, 2x Blob, 1x Melee, 1x Mage
- Wave 49: 3x Nibbler, 2x Melee, 1x Mage
- Wave 50: 3x Nibbler, 1x Ranger, 1x Mage
- Wave 51: 3x Nibbler, 1x Bat, 1x Ranger, 1x Mage
- Wave 52: 3x Nibbler, 2x Bat, 1x Ranger, 1x Mage
- Wave 53: 3x Nibbler, 1x Blob, 1x Ranger, 1x Mage
- Wave 54: 3x Nibbler, 1x Bat, 1x Blob, 1x Ranger, 1x Mage
- Wave 55: 3x Nibbler, 2x Bat, 1x Blob, 1x Ranger, 1x Mage
- Wave 56: 3x Nibbler, 2x Blob, 1x Ranger, 1x Mage
- Wave 57: 3x Nibbler, 1x Melee, 1x Ranger, 1x Mage
- Wave 58: 3x Nibbler, 1x Bat, 1x Melee, 1x Ranger, 1x Mage
- Wave 59: 3x Nibbler, 2x Bat, 1x Melee, 1x Ranger, 1x Mage
- Wave 60: 3x Nibbler, 1x Blob, 1x Melee, 1x Ranger, 1x Mage
- Wave 61: 3x Nibbler, 1x Bat, 1x Blob, 1x Melee, 1x Ranger, 1x Mage
- Wave 62: 3x Nibbler, 2x Bat, 1x Blob, 1x Melee, 1x Ranger, 1x Mage
- Wave 63: 3x Nibbler, 2x Blob, 1x Melee, 1x Ranger, 1x Mage
- Wave 64: 3x Nibbler, 2x Melee, 1x Ranger, 1x Mage
- Wave 65: 3x Nibbler, 2x Ranger, 1x Mage
- Wave 66: 3x Nibbler, 2x Mage
- Any remaining pillars collapse at the end of the wave, as does half the player's current hp if the player is within one tile.
- Wave 67: 1x Jad
- The JalTok-Jad summons five Yt-HurKot at half health.
- Wave 68: 3x Jad
- The penultimate wave. The Jads attack three ticks apart. Each will summon three Yt-Hurkot at half health.
Final boss[edit | edit source]
On the 69th and final wave, TzKal-Zuk will break free from the northern wall. Floating in the lava and moving back and forth between it and the player is a small piece of the wall, which must be utilised as a shield to protect from TzKal-Zuk's attacks. If it attacks the player, it cannot be protected against and it has an extremely high max hit of 251, which has a high chance of killing even a fully healed player. TzKal-Zuk cannot be reached with melee and it has 1200 Hitpoints.
Throughout this fight, other monsters spawn periodically and on cues. Jal-Xil and Jal-Zek will regularly spawn behind the player, attacking the shield until they are attacked, whereupon they retaliate. When TzKal-Zuk is below 480 Hitpoints, a JalTok-Jad will spawn behind the player, similarly attacking the shield. When TzKal-Zuk is below 240 Hitpoints, four Jal-MejJaks are spawned, rapidly healing it. When they are attacked, they stop healing and attack the player with area-of-effect blasts.
Rewards[edit | edit source]
Once players manage to defeat TzKal-Zuk, they will be rewarded with the infernal cape.
There is also a 1/100 chance of receiving a Jal-nib-rek pet upon defeating it. This chance is increased to 1/75 if the player was on a Slayer task to defeat TzKal-Zuk. Outside, players may give TzHaar-Ket-Keh any unwanted infernal capes for a second chance at a Jal-nib-rek, having also a 1/100 chance.
Combat Achievements[edit | edit source]
The following Combat Achievement tasks involve the Inferno.
|Half-Way There||Kill a Jal-Zek within the Inferno.||Elite||Kill count|
|Nibblers, Begone!||Kill Tzkal-Zuk without letting a pillar fall before wave 67.||Master||Perfection|
|Inferno Grandmaster||Complete the Inferno 10 times.||Grandmaster||Kill count|
|The Floor Is Lava||Kill Tzkal-Zuk without letting Jal-ImKot dig during any wave in the Inferno.||Grandmaster||Mechanical|
|Playing with Jads||Complete wave 68 of the Inferno within 30 seconds of the first JalTok-Jad dying.||Grandmaster||Mechanical|
|No Luck Required||Kill Tzkal-Zuk without being attacked by TzKal-Zuk and without taking damage from a JalTok-Jad.||Grandmaster||Perfection|
|Wasn't Even Close||Kill Tzkal-Zuk without letting your hitpoints fall below 50 during any wave in the Inferno.||Grandmaster||Restriction|
|Budget Setup||Kill Tzkal-Zuk without equipping a Twisted Bow within the Inferno.||Grandmaster||Restriction|
|Nibbler Chaser||Kill Tzkal-Zuk without using any magic spells during any wave in the Inferno.||Grandmaster||Restriction|
|Facing Jad Head-on II||Kill Tzkal-Zuk without equipping any range or mage weapons before wave 69.||Grandmaster||Restriction|
|Jad? What Are You Doing Here?||Kill Tzkal-Zuk without killing the JalTok-Jad which spawns during wave 69.||Grandmaster||Restriction|
|Inferno Speed-Runner||Complete the Inferno in less than 65 minutes.||Grandmaster||Speed|
Competitions[edit | edit source]
Upon release, Jagex started a competition where the first three players to obtain an Infernal cape would be rewarded in real life. The first player to obtain it would get a real-life version of the Infernal cape, a RuneFest 2017 ticket & travel, and lifetime membership. The second player would get the same as the first player barring the real-life Infernal cape. The third player would get a RuneFest 2017 ticket and lifetime membership.
- Woox was the first player to complete the Inferno.
- Kelvino was the second player to complete the Inferno.
- Cpl Erik was the third player to complete the Inferno.
The first Ironman players to complete the Inferno were congratulated by the Old School team:
- BadIdeas was the first regular Ironman to complete the Inferno, on 8 June, seven days after its release.
- UIPanda was the first Ultimate Ironman to complete the Inferno, on 7 August, two months after its release.
- H ard was the first Hardcore Ironman to complete the Inferno, on 22 November, five and a half months after its release.
Development history[edit | edit source]
Initial pitch[edit | edit source]
The concept of a Fight Cave expansion and "Jad 2" was first teased at RuneFest 2015, which was slated for a summer 2016 release. Here, upon defeating TzTok-Jad, players could choose to claim their fire cape or sacrifice it, the latter in which would cause the floor to collapse and fight subsequent waves of more powerful monsters, all culminating into fighting "Jad 2".
The proposed stats for the capes obtained upon defeating "Jad 2" was as follows:
|Item||Attack Bonuses||Defence Bonuses||Other|
|Jad 2 melee cape||4||4||4||1||1||12||12||12||12||12||8||0||0%||2|
|Jad 2 range cape||1||1||1||1||6||12||12||12||12||12||0||6||0%||2|
|Jad 2 mage cape||1||1||1||12||0||12||12||12||12||12||0||0||5%||2|
The Fight Cave expansion was polled in Old School Content Poll #38: Jad II, Deadman & Zeah, failing by 2.5%. Shortly after the poll ended, another Developer's Blog was released, now referring to the expansion as The Inferno and its boss as TzKal-Zuk.
The blog now revised the design as entirely separate from the Fight Cave, now revealing that the player will face 40+ waves of six new TzHaar creatures leading to the fight against TzKal-Zuk. In addition, the rewards were reduced to only the melee cape from the previous blog.
The blog also stated that the Inferno was planned to be released around mid-February due to a gap in the Old School Team's release schedule, but due to it now being pitched as a separate piece of content, releasing it then would result in the graphics suffering as a result, likely having to re-use a lot of assets from the TzHaar area.
Because of the tight release schedule past February (Monkey Madness II, seasonal Deadman Mode, Zeah batch 2 (the Wintertodt and the Paradigm of Exodus, now known as the Chambers of Xeric), the team then gave players the option of delaying the Inferno till Zeah batch 3 next year, the city of Keruulm (which is now in-game as Mount Karuulm). Player feedback resulted in Jagex delaying the update til next year.
With February now freed up, another Developer's Blog was released, asking for quality-of-life (QoL) suggestions for their next polls. February would then become known as "QoL month" in the years to come, where the team dedicates the month to requested QoL updates.
Brimstone & The Inferno[edit | edit source]
Brimstone & The Inferno would later be revealed at RuneFest 2016:
Over a year later on 15 March 2017, Jagex released a Developer's Blog, where the Kahlith, a race once created from the TzHaar and born from the core of the Inferno, resided in a village west of Lovakengj within a dormant volcano.
Besides the Inferno, which rewards the now-named infernal cape, it was proposed that players would be able to pickpocket the Kahlith for gems and tokkul, fishing infernal eels and attackable Kahlith citizens that would drop Kahlith armour.
Mor Ul Rek & The Inferno[edit | edit source]
After a day of feedback, the blog was quickly revised, changing the location from west of Lovakengj to within the inaccessible section of TzHaar City, now named Mor Ul Rek, with all the content within it renamed (such as the Kahlith armour now being obsidian armour.)
Mor Ul Rek and The Inferno were then polled in Mor Ul Rek and The Inferno on 24 March 2017, with all the questions passing.
Changes[edit | edit source]
|30 June 2021
References[edit | edit source]
- The Old School Team. "The Inferno". 1 June 2017. Developers' Blogs. *
- Jagex. Old School RuneScape's Twitter account. 9 March 2018. (Archived from the original on 29 May 2020.) Old School RuneScape: "We have now restricted access to The Inferno within the Beta worlds. This is to restrict free practicing."
- Jagex. Old School RuneScape's Twitter account. 8 June 2017. (Archived from the original on 29 May 2020.) Old School RuneScape: "Here are the first 12 to defeat the #Inferno, including the first Ironman. "
- Jagex. Old School RuneScape's Twitter account. 7 August 2017. (Archived from the original on 29 May 2020.) Old School RuneScape: "UIPanda has beaten the game. The first and only Ultimate Ironman to beat the Inferno and achieve the Infernal Cape."
- Jagex. Old School RuneScape's Twitter account. 22 November 2017. (Archived from the original on 29 May 2020.) Old School RuneScape: "Congratulations to @LakeOSRS for being the first Hardcore Ironman to defeat TzKal-Zuk in the Inferno!"