The Crimson Isle is a 
Combat Location. It replaces the ⏣ Blazing Fortress; however, it is meant to be a more difficult Combat Island than ⏣ The End, with most of the mobs having several millions of ❤ Health.
Tasks
When the player first enters ⏣ Crimson Isle, they will be greeted with the following message:
Location
The Crimson Isle can be accessed only after the player has attained Combat XXII (22). It is traveled to by the use of a Launchpad found in the back of the ⏣ Spider's Den.
There are 21 sub-location: ⏣ Barbarian Outpost, ⏣ The Bastion, ⏣ Blazing Volcano, ⏣ Burning Desert, ⏣ Cathedral, ⏣ Crimson Fields, ⏣ Dojo, ⏣ Dragontail, ⏣ Forgotten Skull, ⏣ Kuudra's End, ⏣ Mage Outpost, ⏣ Magma Chamber, ⏣ Mystic Marsh, ⏣ Odger's Hut, ⏣ Ruins of Ashfang, ⏣ Scarleton, ⏣ The Wasteland, ⏣ Matriarch's Lair, ⏣ Belly of the Beast, ⏣ Aura's Lab,
Features
Factions
Factions are a new feature of the Crimson Isle. Players can gain reputation with Factions by killing mobs or doing quests (including Elle's main questline), giving access to special Items and features. There are two factions: the Barbarian Faction and the Mage Faction.
Guards
Guards patrol the cities of important Factions. They are passive, until attacked, when they become hostile.
Bosses
Minibosses and the Magma Boss spawn around the island. They drop rare loot and spawn quickly after they are killed. Similar to the Endstone Protector they will leave iron blocks near death. Miniboss loot will nearly always be Co-op Soulbound. Minibosses include the Magma Boss, Mage Outlaw, Bladesoul, Ashfang and Barbarian Duke X.
Bladesoul
Bladesoul is the first boss of the Crimson Isle. It spawns in the ⏣ Stronghold every 2 minutes after it is killed. It has 50,000,000 ❤ Health.
Magma Boss
The Magma Boss will spawn in the ⏣ Magma Chamber every 5 minutes after it is killed. It has 200,000,000 ❤ Health.
Mage Outlaw
The Mage Outlaw spawns in the ⏣ Courtyard near ⏣ Scarleton every 2 minutes after it is killed. It has 70,000,000 ❤ Health.
Barbarian Duke X
The Barbarian Duke X spawns in the ⏣ The Dukedom near ⏣ Dragontail every 2 minutes after it is killed. It has 70,000,000 ❤ Health.
Ashfang
Ashfang will spawn in the ⏣ Ruins of Ashfang every 2 minutes after it is killed. It has 50,000,000 ❤ Health, having the least health of all the minibosses, however is a more complicated fight, usually requiring more than one player to defeat it.
Kuudra
Kuudra is a 4-player fight against a boss, similar to Dungeons. It takes place in ⏣ Kuudra's Hollow, and drops unique loot.
Vanquishers
Vanquishers are similar to Special Zealots and are mini-withers that have 5,000,000 ❤ Health, which have a small chance to spawn after killing any mob in the Crimson Isle. They drop Nether Stars, which are used to buy Kuudra Keys from the Emissaries in each of the Factions' settlements.
Fishing
The fishing mechanic in the Crimson Isle is different from the other islands. ☂ Fishing Speed is capped at 350 instead of 300. 
Fishing 10 is needed to fish in the ⏣ Crimson Isle as the Starter Lava Rod has that requirement.
Trophy Fishing
The Crimson Isle introduces an exclusive feature called Trophy Fishing. When fishing under a condition, Trophy Fishes can be caught. Trophy Fishes comes with a "rarity" of Bronze, Silver, Gold and Diamond. Using an EPIC Kuudra Pet, LEGENDARY Kuudra Pet, Silver Hunter Armor, Gold Hunter Armor, Diamond Hunter Armor, Magma Rod, Inferno Rod or Hellfire Rod can increase the chance of catching Trophy Fishes.
Lava Sea Creatures
The Crimson Isle has exclusive Sea Creatures, including the following:
Magma Slug: Requires Fishing 27- Moogma: Requires Fishing 28
- Lava Leech: Requires Fishing 30
- Pyroclastic Worm: Requires Fishing 31
- Lava Flame: Requires Fishing 32
- Fire Eel: Requires Fishing 34
- Taurus: Requires Fishing 35
- Thunder: Requires Fishing 36 and Novice Trophy Hunter
- Lord Jawbus Requires Fishing 45 and Adept Trophy Hunter
Trivia
- Before the Crimson Isle was opened on the Alpha Hypixel Network, its Launchpad would display the text "Opening In .... business days".
- The Crimson Isle was the second Alpha Hypixel Network update to feature the Equipment types Necklaces, Cloaks, Belts, Gloves and Bracelets.
- The Crimson Isle features are the second ever to use Loot Sharing, the first being the Ghost.
- All of SkyBlock now uses Loot Sharing.
- The Crimson Isle is based on the Vanilla Nether dimension.
- The name of the island is likely named after the Vanilla Crimson Forest Nether biome.
- The Crimson Isle is believed to be related to the Catacombs.
- Ashfang and Thorn have a similar attack pattern. Both of them only take damage from hits of their minions' death. They don't attack by themselves. Instead, they fight with minions.
- Magma Boss and The Wither Lords have a similar attack pattern as well. Both of them spawn crowds of minions that deals massive damage. They also both deal high damage.
History
| Alpha Hypixel Network | ||
|---|---|---|
| Feb 22, 2022 | Added Crimson Isle. The island cannot be accessed. | |
| Mar 8, 2022 | The Crimson Isle can now be travelled to. | |
| SkyBlock Prototype | ||
| Apr 20, 2022 | 0.13 | Added Crimson Isle. |
| June 14, 2023 | Fixed status effects not applying correctly when joining Crimson Isle. | |
| Oct 4, 2023 | 0.19.5 | Lowered Combat entry requirement from 24 to 22. |
