The Night Archive / 夜の資料館

Two people. Separate notes. One archive to put right.

After the last visitor leaves, two archivists have a map to return and a copied panel record to correct. Each of you holds a different part of the instructions. Read your own card, close it, and talk your way to an answer together.

The Night Archive is a compact collection of two text-based cooperative mysteries, each with its own answer, explanation, and complete story ending. Play with a partner, or read both cards yourself.

Play the complete first case free in your browser →

日本語で最初の一編を結末まで遊ぶ →

Two different ways to piece things together

• Follow the map. Reconstruct a sequence of moves between fixed archive shelves.
• Correct the record. Combine a copied reading with a separate set of relationships to restore four indicators.

The puzzles are self-contained. Optional hints are available for each card; the answer and ending can also be revealed whenever you choose.

Choose screen or paper

• English HTML ZIP: extract the whole folder and open index.html in a current desktop browser with JavaScript enabled. One device is enough: close your card before passing it. No install or account is needed; it works offline after download.
• Japanese HTML ZIP: the same two cases in Japanese, with the same controls.
• English print PDF: separate shared sheets, Player A and Player B cards, hints, answers, and endings. Use ordinary paper and a pen. The PDF contains the same two cases as the HTML editions.

Progress in HTML is saved manually to a local file. The trial and full collection use separate progress files. Phone file-viewer support varies; try the browser case before buying.

What the purchase includes

US$3 minimum for the full two-case collection in all three formats above. The complete free first case is included in that purchase; the second case is the additional mystery. No earlier game purchase is required. These are new cases, separate from Three Harbor Signs.

Personal, noncommercial play with friends or family while the purchaser is present, including the copies needed for that play. Files may not be redistributed, resold, or used to run paid or commercial events.

Original fiction and cover art created with AI assistance. The cover is illustrative; this is a text-first game.

夜の資料館

閉館後の資料館で、棚を移した地図の行き先と、表示盤の写しに残った一か所の誤りを確かめる、短い協力謎解き二編。自分のカードを読み、閉じてから端末を渡して、二人の情報を合わせます。一人でも遊べます。

全二編版は最低US$3。日本語・英語HTMLと英語の印刷用PDFを含み、どの形式も同じ二編です。最初の一編は結末まで無料。全二編版にはその一編も含まれます。個人の非商用の遊び向けです。