Browse English-language interactive fiction titles in the IFWizz database.
Obsessively Complete Infocom Catalog
Explore a detailed catalog of interactive fiction titles published by Infocom.
About Obsessively Complete Infocom Catalog
The Obsessively Complete Infocom Catalog is a website that attempts to collect every known version of each Infocom game, including source code and compiled game files. It labels packages with release and serial number information where possible, notes that Infocom serial numbers were compilation timestamps, and advises playing the "Masterpieces version" or the "LTOI version" if no Masterpieces exists, while avoiding "final-dev" builds because they are unreleased and probably buggy. It packages source directories separately and does not include modern recompilations or updates.
The site offers a JSON catalog and bulk downloads for game files, sources, interpreters, and other files. It includes a few 1980s fan-modified game files whose serial and release numbers were changed. Most included documents are proprietary, with copyright held by Microsoft; as of November 2025, Microsoft declared Zork 1, Zork 2, and Zork 3 open source.
Key features
- Collects every known version of each Infocom game, including source and compiled files.
- Labels packages with release and serial number information where possible.
- Recommends Masterpieces versions, or LTOI versions when no Masterpieces exists.
- Warns that final-dev builds are unreleased and probably buggy.
- Provides catalog.json and bulk ZIP downloads for files, sources, interpreters, other.
- Recreates known game file versions using historical patch transforms.
Best for: Infocom fans, interactive fiction scholars, and people studying old-school text adventure development or game file versions.
Good for
- Gathers every known Infocom game file variation in one place.
- Includes release and serial metadata that can help reconstruct development sequences.
- Offers a JSON catalog and bulk downloads for game files, sources, interpreters, and other files.
Watch out for
- Does not include modern recompilations or updates to the games.
- Most included documents are proprietary; copyright rests with Microsoft, except Zork 1-3 were declared open source in 2025.
- Some final-dev builds are unreleased and probably buggy, so the site advises avoiding them.
Obsessively Complete Infocom Catalog at a glance
- Website
- eblong.com/infocom
- Category
- Gaming › Browser Games
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
Obsessively Complete Infocom Catalog alternatives
Tools and sites you could use instead, ranked by how closely they match.
The Interactive Fiction Archive holds interactive fiction works, with the page displaying a sample story scene.
Almost Idle catalogs incremental games, with a community-driven collection of more than 600 titles.
Alternate History Simulator lets players explore alternate-history scenarios through an interactive simulation.
Popular in Browser Games
Well-known listings from the same topic.
DuckDuckgo 2048duckduckgo.com?ia=answer&q=play+2048GuessWhereYouAreguesswhereyouare.comCountlecountle.orgMoney Simulatorsimulator.moneyMoreWordsmorewords.comTetristetris.com
Obsessively Complete Infocom Catalog FAQ
Which version should I play?
The site says to pick the "Masterpieces version", or the "LTOI version" if there is no Masterpieces, and to avoid "final-dev" versions.
Does the collection include modern recompilations?
No. The site states that it does not include modern recompilations and updates.
Are the game files open source?
Most are proprietary documents with copyright held by Microsoft. As of November 2025, Microsoft declared Zork 1, Zork 2, and Zork 3 open source.
Is something wrong or out of date?
Tell us and an editor will check it.
Own this website?
Claim this listing
Claim the listing and suggest updates yourself. An editor checks every claim first.