About
A catalog of what Dungeon Crawl Stone Soup generates on a given seed, for browsing and comparing seeds against each other.
What this is
Start a seeded game and the dungeon is fixed before you take a step: the same seed on the same build always lays out the same floors, with the same items on them. This site plays the first several floors of a great many seeds ahead of time and writes down what it found, so you can ask which seeds have the thing you want — an early Trog altar, three potions of haste on the ground, a wand of digging in a shop — instead of rolling seeds and finding out the hard way.
Nothing here plays the game for you. It is a reference for choosing a seed before you start, or for reading what a seed you have been given actually holds.
The build is part of the seed
A seed number on its own is not an answer. The same number generates an entirely different dungeon on every version of crawl, so every page here is scoped to one build, named at the top, and the build picker moves between them. A seed quoted without its build is the commonest way a shared seed turns into someone else's disappointment.
How much of the seed space is here
Very little, and that is fine. There are more possible seeds than anyone will ever play, so this is not a complete list of anything — it is a large sample, and it grows. A search finds the seeds in the sample that match; it does not find every seed that could. If a search comes back empty, the seed you want almost certainly exists and simply has not been catalogued.
Each seed is also only searched down to a certain depth, and most stop around the eighth floor of the Dungeon. "Not here" and "not looked at yet" are different answers; every seed's page says how deep it went, and will go deeper if you ask it to.
The game
Dungeon Crawl Stone Soup is free and open source, and lives at crawl.develz.org. This site is not affiliated with it — it is an unofficial reference built by running the game's own dungeon generator over a lot of seeds and reading the results.
The code
The source lives at github.com/jonesmelton/dcss_seeds.