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- SurLeFil
v4.1 — Minor bug fixes
A small round of fixes to smooth out the rough edges. • Leaving a room or activity is reliable again — no more freezing after the first exit, and a quick double-click won't trigger it twice. • Switching player profiles…
Announcement1 changePerformance - SurLeFil
v4.0 — The New Campus
A whole new campus The island has been rebuilt from the ground up — new look, new atmosphere, a living world to explore. Grudu welcomes you on your very first launch, Cosinus lurks in the campus pond with his usual sarc…
Patch notes6 changesFixGameplay - SurLeFil
SLF Reborn 3.7 — The World is Mathematical
The World is Mathematical This release brings the long-promised decimals and fractions to the Math Corner, and extends Pythagor Hall to circles. — Math Corner — Decimals & Fractions — A full new wave of lessons and exam…
Announcement9 changesGameplayUI/audio - SurLeFil
Decimals & Fractions: 8 new lessons, 20 new challenges
We've been hard at work on the next big content drop for SLF: 8 brand-new math lessons and 20 new challenges, all built around decimals and fractions — coming late May. Learners explore why a number breaks apart and how…
Announcement2 changesGameplay - SurLeFil
v3.6.0 — May 8, 2026 — Polishing the Foundations
This release focuses on consolidating and refining what's already there rather than adding new buildings — making the existing experience cleaner, more pedagogical, and more reliable. Special attention was given to the…
Announcement8 changesFixBalance - SurLeFil
Minor Corrections
New Scriptorium musical theme and few minor corrections
Announcement1 changeGameplay - SurLeFil
Scriptorium V1 beta — Update 28/04 Following early beta feedback, a few
Scriptorium V1 beta — Update 28/04 Following early beta feedback, a few improvements: QR code is now bigger (300×300), easier to scan on smaller displays Scenario flow clarified: write your page first, then validate, th…
Announcement2 changesCompatibilityUI/audio - SurLeFil
v3.5.0 — April 26, 2026 — The Scriptorium
a brand new building dedicated to handwriting practice, inspired by the medieval monastic tradition and patroned by Alcuin of York, the scholar who reformed European writing under Charlemagne in the 8th century. A compl…
Announcement3 changesGameplayServer - SurLeFil
Drawing the Words
Two new projects in development SLF continues to grow. Two major pieces are currently being built into the campus, and this trailer gives you a first glimpse of one of them — the Scriptorium. The Scriptorium & Historium…
Patch notes4 changesGameplayServer - SurLeFil
Small Correction Patch for Build 3.4.0
Small Correction Patch for Build 3.4.0 Thanks to Kastuk for the feedback.
Announcement - SurLeFil
]v3.4.0 — March 13, 2026 — Geometry, Music & Developer Messaging
v3.4.0 — March 13, 2026 — Geometry, Music & Developer Messaging Added the first playable geometry levels in the new Pythagor Hall, allowing players to construct and explore simple geometric shapes. New musical themes ha…
Announcement10 changesFixGameplay - SurLeFil
The Pytha Room Is Evolving
The Pytha Room is evolving. Over the past weeks, I’ve been working on fully interactive geometry tools inside Sur Le Fil. The ruler, compass, set square and protractor are now functional and integrated into the Pytha Ro…
Announcement - SurLeFil
🔧 v3.3.0 — Progression & Kastuk V2 Update January 19, 2026
📝 Exams Local file download for non-WebGL builds, avoiding browser-based downloads Added Professor intro voice lines for selected exams 🔌 Simulator Press E to quickly create a wire Fixed issues with the Add Wire / Exi…
Announcement - SurLeFil
Version 3.2.0 – Player Feedback Improvements (Special thanks to Kastuk)
🎮 UX & Pacing Improved teacher dialog control: Added Space key to pause / resume teacher speech. Clear explanation added early in the game. Fixed UI focus issues: Prevented unintended button activation after keyboard i…
Announcement21 changesFixGameplay - SurLeFil
Sur Le Fil Reborn: a new foundation for the project
Complete redesign of the game architecture New unified campus New simulation engine New progression system New educational content Introduction of Robert, a programmable robot to discover logic and programming Improved…
Announcement5 changesGameplayPerformance - SurLeFil
Version 3.1.0
Introduction of Robert, a programmable robot created to introduce players to the basics of coding. Minor corrections.
Announcement




