A Time-Travel Puzzle Game & Myst-Like Manor Mystery
Yesterlight is a wistful time-travel puzzle game and manor mystery set inside one crumbling house. A brass chronoscope lets you scrub each room across four eras of its history — Founding, Height, Decline, and Now — and anything you change in the past ripples forward through every younger era. It is a Myst-like point-and-click adventure: no combat, no timers, no twitch — just a haunted-but-not-frightening house and puzzles that ask you to think across time. Fennick Hall has been built, flooded, burned, and abandoned; its last owner built the scope to find the hour the family's luck turned, then vanished, leaving the device still warm. Play the whole East Wing free, offline, with no account.
What it is:
- A brass chronoscope era slider that scrubs each room across four eras, morphing decades physically through the room
- Forward-only causality — oil a lock in the Founding and it stands open in every later era; take an object in the past and it is gone from the present
- The Chronoscope Journal — recovered story pages plus a plain cause and effect chain of everything you have rewritten
- Between-era superpositions that two late puzzles turn into their answer
- Owner's-marginalia hints in the dead owner's own voice — rule-based, fully on-device, never generated
- 100% offline — no account, no cloud, no analytics, no ads; your save never leaves the phone
How It Works
🕰️ The Chronoscope Era Slider
A persistent brass slider scrubs the current room between its four eras with a continuous morph — furniture rises and sinks, light shifts from candle amber to cold ruin sky, and decades read as things physically moving through the room, not a fade. Rest it between two eras for a superposition two puzzles depend on.
⏳ Forward-Only Causality
Change the past and watch it ripple forward. Oil a stiff lock in the Founding and it stands open in every later era. Take the candlestick in the Height and it — and the scorch mark it would have made — are gone from the Decline and the Now. The one hard rule: the fire is fixed, and the finale reveals why.
🧩 Puzzles Across Time
Drop a key in a sapling's planter in the Founding and cut it out of the grown oak in the Now. Move a strongbox to the one closet that survives both the fire and the flood. Overlay two half-inscriptions that only complete in the space between two eras. Point-and-click, thoughtful, and finishable in an evening.
📖 The Chronoscope Journal
Every change you make is auto-logged as a plain cause and effect chain — “you oiled the lock → it opens in three eras” — read straight off the world's event log. Recover a page of the owner's journal at the end of each wing to unspool the story of Fennick Hall.
🕯️ Owner's-Marginalia Hints
Stuck? The dead owner answers in her own voice — oblique first (“I too kept trying to fix it after it broke”), concrete only after you have been stuck a while. The hint engine is rule-based and fully on-device — no LLM, no network, always the same for the same board.
🔒 Private & Offline
No account, no login, no cloud, no analytics, no ads. Your save is a tiny local file on your phone — there is no server to leak it. The whole manor plays offline, and nothing you do ever leaves the device.
A Look Inside
Made for Mystery Lovers
🗝️ The Myst-Like Fan
- Slow, atmospheric point-and-click exploration — no combat or timers
- A single hand-built house to read like a book, room by room
- Puzzles that reward noticing, not reflexes
⏱️ The Time-Travel Puzzler
- A signature era slider with real forward-only causality
- Between-era superpositions two late puzzles turn into their answer
- A cause-and-effect journal that shows how the past reached the present
🔌 The Offline Player
- 100% offline — plays on a plane, in a tunnel, anywhere
- No account, no ads, no data leaves the phone
- A full free chapter before you ever consider paying
Yesterlight Pro
The entire East Wing is free forever — around an hour of play, all four eras, the full era-slider mechanic, and its journal page. Yesterlight Pro unlocks the two remaining wings, the grounds, the finale (why the fire was always fixed), and the owner's concrete-hint tier for when you are truly stuck. Billing is store-managed — cancel anytime in the App Store or Google Play.
Annual
Best value, with a 7-day free trial — works out to about $1.67/month, billed yearly.
Monthly
Flexible month-to-month access to the whole manor.
Lifetime
A single one-time purchase — no subscription, yours to keep. The trust play for players done with surprise fees.
Prices may vary by region and are shown in the app at the time of purchase. All three options unlock the same Yesterlight Pro (yesterlight_pro) content. The 7-day free trial is offered on the annual plan only. The lifetime option is a one-time, non-renewing purchase. Manage or cancel a subscription anytime in your device's App Store or Google Play subscription settings. See our Terms and EULA for full subscription details.
Privacy First — Your Save Stays on the Phone
Yesterlight is built local-first. Here's exactly how it works:
- No account, no cloud, no server. You don't sign up or log in. There is no backend that receives your progress — nothing to leak and nothing to fail on an update or a new phone.
- Your save never leaves the device. Your event log, inventory, recovered pages, and settings are stored only in a small local file on your phone.
- The game is fully offline. Every room, era, puzzle, and hint runs on-device. There is no network requirement to play.
- Hints are deterministic and on-device. The owner's-marginalia hint engine is rule-based logic — there is no language model, no AI model, and no model download, and it needs no network or key.
- One billing helper. The only data that ever leaves your phone is purchase/subscription data, handled by Apple, Google, and RevenueCat to validate Yesterlight Pro. They never receive your gameplay.
For complete details, see our Privacy Policy, Terms of Service, and EULA.