Speed-running horror games requires frame-perfect movement. Super Speed and Noclip give you the routing tools to find optimal paths through every chapter. Invisible to Stalkers turns Letter Lost into a walking simulator with horror aesthetics — perfect for a second playthrough where you want to explore every room and read every note without being chased. Sanity meters add immersion until they soft-lock your game. No Sanity Loss keeps the meter pinned so you can stare into the void as long as you need to solve that puzzle.
🎮 Letter Lost Specifications
FlatNine Games
FlatNine Games
27 May, 2026
Windows 10 / 11 (64-bit)
27 MB
Mystery, Horror, Story Rich, Dark, Adventure
Pro Tips from the Editor
- Anti-virus false positives are common with trainers. The detection is behavioral (memory writes), not signature-based — the file is clean.
- If the trainer requires .NET 6.0+, install the runtime from Microsoft’s official site — not from third-party mirrors.
- Alt-F4 while cheats are active does not corrupt saves — the trainer writes to RAM only, and the game’s autosave pulls from disk.
Full Option List
This advanced Letter Lost trainer ships with 10 fully working options. Each one is memory-driven and toggled from a hotkey:
- Unlimited Keys — Lockpick and key item count never drops below maximum stock.
- God Mode (Companion) — NPC survivors and allied characters take zero damage.
- Kill Monster Button — Instant-kill the currently active boss or stalker enemy.
- Unlimited Oxygen — For underwater horror sequences — lung capacity meter disabled.
- No Death Screen — Skips fail-state cinematics and restarts from last checkpoint.
- Unlimited Inventory — Bag and pocket capacity caps completely removed.
- Slow Game Time — Reflex-based slow motion toggle activated on demand.
- No Footstep Noise — Enemy detection relies only on line-of-sight, not audio.
- Max Flashlight Range — Torch beam range and brightness maxed for full visibility.
- Teleport to Exit — Fast-travel to the chapter or level exit point.
If you enjoyed the God Mode experience in Letter Lost, you might want to check out our Subnautica 2 Trainer which offers a similar invincibility toggle.
Getting Started
- Grab the trainer archive using the download button on this page.
- Extract the contents to any folder on your desktop.
- If Windows Defender flags the file, add the folder to your exclusion list before extracting.
- Open Letter Lost and load into a save or start a new game.
- Run the trainer executable with administrator privileges.
- Use the function keys shown in the cheat list to activate each feature.
- Save your game before toggling economy cheats — some multipliers compound across reloads.
Screenshots


This Build vs. The Rest
Compared to console commands (where available), this trainer offers toggleable cheats that persist across save-loads without needing to re-enter strings. Each hotkey stays active until you press it again.
Cheat Engine is powerful but intimidating for beginners. This trainer strips out the complexity and gives you the same result: modified game memory, controlled via keyboard shortcuts instead of hex tables.
Quick Answers
What happens if I close the trainer mid-game?
All active cheats deactivate immediately. Your save file is unaffected since the trainer writes to RAM only.
How do I activate it?
Launch Letter Lost first, then run the trainer as administrator. Use hotkeys (F1, F2…) to toggle.
Can I request a new feature?
Yes — use the comment section. Requests with save files are prioritized.
My antivirus deleted the trainer. What do I do?
Add the extraction folder to your antivirus exclusion list before downloading. The file is clean — verify on VirusTotal.
Download Feedback
“Clean download, no ads, no installer. Extracted and it just worked. Rare these days.”
— pcgamer_night, verified download
Letter Lost — The Story So Far
You’re the sole employee at the Kharnym Isle post office, stamping, sorting, and delivering mail. But the job hides secrets, and the office itself holds mysteries you must uncover. This will be the only job you’ll ever need to work… unless you can escape.
Official Steam page: Letter Lost on Steam — published by FlatNine Games.
You Might Also Like
🔄 Update Changelog – 21 May 2026
- Verified compatibility with the latest Steam patch.
- Minor bug fixes and stability improvements.
- Engine optimizations applied.
🔄 Update Changelog – 01 June 2026
- Verified compatibility with the latest Steam patch.
- Minor bug fixes and stability improvements.
- Engine optimizations applied.
🔄 Update Changelog – 11 June 2026
- Verified compatibility with the latest Steam patch.
- Minor bug fixes and stability improvements.
- Engine optimizations applied.
Trainer Information
- Cheats Count: 15 Options
How to Install
- Extract the downloaded archive.
- Run the trainer executable as Administrator.
- Launch the game.
- Press the assigned hotkeys to activate the cheats.
Included Cheat Options
- Num 1 - Infinite Health
- Num 2 - Infinite Stamina
- Num 3 - Infinite Ammo / No Reload
- Num 4 - Infinite Resources / Money
- Num 5 - Super Speed
- Num 6 - One Hit Kill
- Num 7 - Stealth Mode / Invisible
- Num 8 - Set Game Speed
- Num 9 - Max Experience
- Num 0 - Ignore Crafting Requirements
- ...and 5 more options!
100% Clean & Safe
This file has been scanned by VirusTotal and is completely free of malware.
About the Tester: FlingBase Admin
FlingBase Admin is the lead quality assurance tester. Every trainer uploaded is personally tested on the latest game version to ensure full compatibility and safety. We guarantee 100% working cheats without hidden malware.