The Abyss

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Version 0.29: This article may not be up to date for the latest stable release of Crawl.
The Abyss is a truly bizarre place, ever-changing and twisted. It is filled with all sorts of monsters, mostly of demonic nature, whose common aim is to feast on intruders. It is also the garbage dump for many sorcerers, who delight in sending would-be champions like you to these proving grounds of madness. Reportedly, there is some structure to the chaos, as Lugonu seems to concoct schemes around this place and its denizens.

The Abyss consists of seven infinite levels. The abyssal rune can be found from the third level onwards, and is more common at greater depths. The Abyss can be purposefully reached through portals in the Depths. Portals back to the dungeon are scattered throughout the Abyss, and are found more commonly at greater depths or while carrying the abyssal rune. Killing monsters will warp the substance of the Abyss, eventually generating a gateway out. Further persistance will wear holes in the abyss, allowing descent into deeper layers.

A one-way gate to a demon-haunted realm, riven by chaos, its very substance impermanent and whimsical, filled with creatures out of nightmare.

Abyss entry.png The Abyss is an extra-dimensional chaotic plane without definite shape or form, inhabited by unholy horrors and ruled by Lugonu the Unformed. Whether you end up in this horrible place intentionally or as the result of sheer bad luck, dedicated explorers who manage to survive will eventually find the abyssal rune of Zot, and perhaps even a way out!

Structure

The Abyss is an unorthodox seven-floor branch, with each "floor" an endless plane of constantly shifting terrain. Travel within or between levels of the Abyss is made difficult by several permanent branch features:

  • No items spawn, excepting the rune or a man-made vault.
  • Mapping the Abyss is impossible. Its terrain constantly changes out of sight; anything that leaves your sight is quickly forgotten.
    • The abyssal rune will be marked on the minimap, if it has generated. When you get close to it, a "runelight" will inform you that you're approaching.
  • The player will be teleported at random intervals. 20% of the time, this teleport will reset the entire map.
    • When teleporting, sometimes players will be forcefully sent deeper into the abyss, at a 3 * (XL - Depth)^2 / 27^2 chance.[1]
  • Instead of regular stairs, abyssal stairs and branch exits appear randomly or after getting enough XP. You can't ever go up a floor, even when re-entering the branch; just down or out.
  • You may occasionally see orderly structures in the Abyss. These vaults often contain powerful monsters, Abyssal stairs, the Abyssal rune, or even a way out. Approach these with caution as they are usually well-guarded.

Entering the Abyss

There are several ways to enter the Abyss; some are voluntary, most are not. Abyssal Knights begin the game in Abyss:1, but always spawn on an exit. Otherwise, you can:

When entering the Abyss, you will always enter the lowest level you've been so far. Involuntary banishment (i.e. not entering a portal or using Lugonu ability) will occasionally send you deeper. The higher your XL, the higher chance for a deeper level.

Being banished while in the Abyss will drive you down a floor.

Exploration

Your main objectives are to either get out, or get the rune. You shouldn't daly around much; higher level (~XL20) characters might survive Abyss:3 easily, but the deep Abyss (A:6-7) is threatening to even 15-rune characters. Any exploration also puts you at risk of being malmutated by its inhabitants.

The Abyssal rune may generate from Abyss:3 onwards, always in a vault. It spawns at increased freqency at lower levels (maximum of A:5), but the greatly increased monster generation rate gives players little incentive to go further. Going deeper also increases the spawn of Abyssal stairs out and down. Lugonu worshipers of 5* or 6* piety are treated as one floor deeper than normal for rune generation. If the rune has spawned, you will see it's location on the minimap.

When the player approaches the rune’s location, they will be warned in the message log, and have the rune location marked on the map. Runelight tiles indicate the presence of a rune nearby.

Exit

Once you have the rune, exits will be discovered at a much faster rate. Branch exit spawning:

  • A:1 = 1/7250 revealed tiles
  • A:2 = 1/6000
  • A:3 = 1/4750
  • A:4 = 1/3500
  • A:5 + = 1/2250
  • Holding Abyssal rune: 1/1000

You may kill monsters to eventually create a gateway out; higher XP contributes more. However, going deeper than A:4 gives a (Floor-4)x XP penalty for purposes of stair creation.

Tips & Tricks

  • The enemies found here are not much weaker than those found in Hell, so a full complement of resistances (particularly mutation resistance) is recommended. Getting surrounded here can be deadly, but if you can run away for long enough the level will reset, saving you from your pursuers. Having stealth may be useful, which can let you walk away from fights you just don't want to deal with.
  • Getting sent to the Abyss early (usually through Banishment) is often a death sentence, but you may be able to survive long enough to find a gate out. For almost any player, surviving the Abyss is about mobility first. Use every speed advantage you can muster to avoid every combat you can; even if you can defeat some of the weaker foes, you want to spend every possible turn exploring new tiles and generating new chances of escape. When you see a monster, you should head in the opposite direction.
    • A means of flying over lava or deep water and a wand of digging will help manufacture avenues of escape when you're seemingly trapped. Since teleports take a while to kick in, consider teleporting on sight when you see speedy, lethal monsters like executioners or ranged threats like hell sentinels. Blinking can get you out of a nasty corner. Summons can slow/entangle pursuers. Use quiet dead ends to regenerate HP/MP. Then, get moving.
  • The smartest way to survive the Abyss is to only enter it on your own terms. Read the page on Banishment for tips on avoiding one of Crawl's deadliest spells.

Monsters

t Apocalypse crab.png Apocalypse crab X Thrashing horror.png Thrashing horror X Starcursed mass.png Starcursed mass X Tentacled starspawn.png Tentacled starspawn
x Ancient zyme.png Ancient zyme * Lurking horror.png Lurking horror v Spatial maelstrom.png Spatial maelstrom * Wretched star.png Wretched star

History

  • In 0.29, the anti-scumming measures of 0.28 were mostly reverted:
    • The Abyss gives XP and piety again (but not items); the rune no longer gives XP.
    • The branch is now 7 levels deep. For monster generation, A:6 is considered 10 floors deep, and A:7, 15 floors.
    • You will always travel to (at least) the deepest level you have visited so far.
    • Players will sense the rune's location on the map, including when it shifts or disappears. In addition, a 'runelight' will prompt you whenever you get near the rune's location.
  • In 0.28, anti-scumming measures were implemented:
    • The Abyss no longer randomly generates items. They may still spawn as part of a vault.
    • XP and piety cannot be earned normally; XP is still used to open gateways, but doesn't contribute to anything else. Instead, collecting the rune provides 2 XL's worth of experience and some skill points.
    • To compensate, gateways (both), rune vaults, and plunges are more common, and wretched stars were nerfed.
  • Prior to 0.25, if you spawned an Abyss exit without leaving/descending, you would always spawn stairs deeper by getting XP.
  • Prior to 0.23, players could find portals to the Abyss in the Labyrinth.
  • Prior to 0.22, you could not be dragged deeper into the Abyss when being teleported.
  • Prior to 0.18, killing monsters in the Abyss couldn't eventually spawn exits and down-stairs.
  • Prior to 0.15, the Abyss would often cancel any attempt at blinking.
  • Prior to 0.12, the Abyss had only one floor, and finding the rune was simply a matter of wandering it for long enough. Lava and deep water terrain could be generated.
  • Prior to 0.10, the Abyss' terrain shifting would happen at a much slower pace, and only when you weren't looking directly at it.
  • In earlier versions, the Abyss would wrap around on itself if you went too far in one direction. Also, banishment to the Abyss was one of the possible results of Hell's mystical force.

References

  1. abyss.cc:1644 (0.28.0)