Walkthrough
Friday through Sunday chapter routes, Demo and Lite openers, and a full-game hub that links every verified premium puzzle chain.
Out Now · Fan Wiki
Servant of the Lake Wiki
Day 1–3 walkthroughs, 49 achievements, puzzle codes, and Vanderboom endings for Rusty Lake's Servant of the Lake.
Unofficial wiki for Servant of the Lake: three-day walkthrough, 49 achievements, Demo codes, maps, and endings.
- Out now
- Aug 13, 2026 launch
- 4–5h
- Main story length
- 49
- Steam achievements
- PC+Mobile
- Steam · iOS · Android
Browse by need
Every section below links into dedicated pages with step-by-step help.
Guides
How to buy, notebook replay, all 49 achievements, Kate's brother secret, Demo downloads, and softlock troubleshooting.
Puzzles & codes
Isolated solutions for Demo 235/728 and full-game codes 243, 374, 315, 91276, 281, 2451, 1643, and 6294.
Estate map
Room-by-room layout of the Vanderboom house: kitchen, Aldous bedroom, attic scroll hunt, and cellar cave of the Lady of the Lake.
Lore
Who the Vanderbooms are, how the servant becomes Harvey, Sunday endings, and how the weekend sits decades before Rusty Lake: Roots.
Review & platforms
Post-launch review, Overwhelmingly Positive Steam score, Steam vs mobile, trailers, and whether the weekend is worth $5.99 on sale.
Tools
Interactive helpers that keep Friday–Sunday chapter gates and Demo item chains visible while you play.
Featured guides
Deep walkthroughs and how-to pages for Demo puzzles and launch week.
Guides All 49 Achievements
Servant of the Lake 49 Steam achievements: missable Day 1–3 trophies, story chapters, and You've Found Him after credits.
Read guide
Lore Endings and Harvey
Servant of the Lake endings: Sunday blood-moon escape, the servant who becomes Harvey, and Kate's post-credits brother hunt.
Read guide Puzzles Full-Game Codes Index
Every Servant of the Lake full-game code: 243, 374, 1753, 315, 91276, 281, 2451, 1643, 6294, plus Demo 235 and 728.
Read guide Review Launch Review
Servant of the Lake launch review: Overwhelmingly Positive Steam score, 4–5 hour weekend, 49 achievements, and who should buy now.
Read guide Tools Weekend Chapter Checklist
Interactive Servant of the Lake weekend checklist: tick Friday–Sunday chapters plus Kate's secret hunt, saved in your browser.
Read guide
Walkthrough Day 1 Friday Walkthrough
Servant of the Lake Day 1 walkthrough: arrival, porridge, Aldous, reception, guests, tea, reunion, night watch, and attic.
Read guide Guides Kate's Brother Secret
You've Found Him walkthrough: Kate's letters, clock 4:05, bath tiles, RRRLRLRRL, attic stars, cellar bottles, and code 6294.
Read guide Puzzles All Demo Codes
Every Servant of the Lake Demo code: portrait safe 235, easter egg box 728, where to enter them, and what each unlocks.
Read guide Review Demo Review
Honest Servant of the Lake Demo review: 15–30 minute Lite impressions, Aldous routine strengths, short pacing limits, and Rusty Lake tone.
Read guide Tools Morning Routine Checklist
Interactive Servant of the Lake morning routine checklist: tick Aldous gates from wake at 7:00 through guest carriage—saved in your browser.
Read guide Walkthrough Day 2 Saturday Walkthrough
Servant of the Lake Day 2 walkthrough: coffee 315, William, hunt 91276, laundry, bath 281, cellar timepieces, and the cave book.
Read guide Guides Notebook Guide
Use the Servant of the Lake notebook: track chores, clues, and achievements across the Vanderboom weekend without spoiling puzzle solutions.
Read guide Lore Roots Connection
How Servant of the Lake connects to Rusty Lake: Roots—official prequel framing, Vanderboom house return, and what the Demo confirms.
Read guide Walkthrough Day 3 Sunday Walkthrough
Servant of the Lake Day 3 walkthrough: find Rusty, elixir 2451, dinner, dressing, serving, departure, and Harvey ending.
Read guide Guides How to Buy Servant of the Lake
Buy Servant of the Lake out now: Steam ~$7.99 with intro discount, mobile ~$4.99, itch follow, Demo vs premium, and launch checklist.
Read guide Walkthrough Full Game Launch Guide
Servant of the Lake is out Aug 13 2026: length, price, notebook, achievements, Demo skills, and spoiler-safe launch tips.
Read guide Map Attic Map
Servant of the Lake attic map: night-watch hatch, collection box, crow window, poem statues, constellations, and William's scroll.
Read guide Walkthrough Demo Full Walkthrough
Full Servant of the Lake Demo walkthrough: coach to carriage, code 235, porridge, Aldous morning, insect berries.
Read guide Guides How to Get the Demo
Download Servant of the Lake Demo and Lite: Steam PC demo, mobile Lite, itch.io options, platforms, and which build matches our walkthrough.
Read guide Map Cellar and Cave Map
Servant of the Lake cellar map: armchair hatch, bottle symbols, Lady of the Lake cave, statue clocks, and Kate's red-cloth room.
Read guide Guides Easter Egg and Code 728
Servant of the Lake Demo easter egg: enter code 728 before Aldous room, black bird egg, wall hand trade, hint paper, follow the bird.
Read guide Walkthrough Lite Mobile Walkthrough
Servant of the Lake Lite walkthrough for iOS and Android: touch controls, Demo parity, step order, and differences from the Steam PC build.
Read guide Quick start
New to the estate? Follow this path before guests arrive.
- 1
Buy or install the full game
Grab Servant of the Lake on Steam, itch.io, iOS, or Android. Check our how-to-buy guide for prices, intro discounts, and Demo vs premium differences.
- 2
Use the notebook early
Open the in-game notebook often to track chores, clues, and achievements while you serve the Vanderboom weekend.
- 3
Clear the free Demo first if you need practice
Still stuck on porridge or Aldous’s morning gates? Finish the Demo walkthrough and routine checklist before diving into premium rooms.
- 4
Follow the three-day walkthrough when stuck
Open the Day 1, Day 2, or Day 3 walkthrough for chapter order, then jump to the codes index for 235, 243, 315, 91276, 281, 2451, and 6294.
- 5
Plan achievement and secret ending runs
There are 49 Steam achievements. After credits, replay notebook chapters for Kate's brother and You've Found Him.
Explore the wiki
Seven hubs organised around how servants actually get stuck.
Walkthrough Walkthrough Hub
Servant of the Lake walkthrough hub: Day 1–3 routes, Demo and Lite openers, codes, attic and cellar maps, and weekend tools.
Read guide
Guides Guides Hub
Servant of the Lake guides hub: 49 achievements, Kate's brother, notebook replay, how to buy, Demo download, and 728.
Read guide Puzzles Puzzles Hub
Servant of the Lake puzzle solutions: full-game codes 243–6294, Demo 235 and 728, porridge, insect berries, and portrait logic.
Read guide Map Estate Map Hub
Servant of the Lake estate map hub: kitchen, Aldous room, attic scroll hatch, cellar cave, and Demo room routes.
Read guide Lore Lore & Family Hub
Servant of the Lake lore hub: Harvey ending, Vanderboom family, 1839 Friday–Sunday timeline, and Roots prequel links.
Read guide Review Review Hub
Servant of the Lake reviews hub: launch impressions, Overwhelmingly Positive Steam score, platforms, trailers, and buy advice.
Read guide Tools Tools Hub
Servant of the Lake tools hub: weekend chapter checklist, morning routine ticks, and Demo item tracker saved in your browser.
Read guideFAQ
Wiki FAQ
Quick answers to the most common questions.
Is Servant of the Lake out yet?
Yes. The premium game launched August 13, 2026 on Steam, iOS, and Android. Free Demo (PC) and Lite (mobile) remain available as separate downloads.
Is this wiki official?
No. This is an unofficial fan resource. Always confirm prices, patches, and announcements on the official Steam page and servantofthelake.com.
Which languages are supported?
This wiki is available in English, Français, Deutsch, and Español.
Where do I start if I am stuck in the full game?
Open the Day 1, Day 2, or Day 3 walkthrough, then jump to the matching code on the full-game codes page. Demo players can still use the Demo walkthrough and morning checklist.
How long is the full game?
Rusty Lake quotes roughly 4 to 5 hours for the Friday–Sunday story. Steam lists 49 achievements; Kate's brother hunt adds a post-credits notebook replay.