About The Secret of Langton Manor, from BoardGameGeek:
The Secret of Langton Manor is an episodic print-and-play escape-room series for 1-4 players (best at that size, but workable with up to 6).
Each chapter is a stack of printable pages you cut into "room" and "object" cards.
A free companion app is used only to verify each three-digit solution on an on-screen combination lock and provide optional tiered hints.
When a code is accepted, the app simply tells the group which printed page to draw next; all other interaction happens at the table.
Every episode contains ten puzzles, all solved by three-digit codes tied to symbols, and plays in 60-90 minutes. The timer can be paused, so sessions need not be continuous.
The story unfolds in 1922 through diary pages, newspaper clippings, photographs, and other physical props. Episodes form a single narrative, yet each begins with a concise recap, so they can be played in or out of order.
Episodes 1-4 are available (≈ six hours of total play). Legacy (Episode 1) is free. Episode 5, the finale, is in development.
Download and print from the official site https://bromelain.mobi or-if you prefer-via the alternate storefront https://bromelain.itch.io
-description from the designer