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A campus to explore
Wander a living island campus — the Scriptorium, the Sciencetorium, the Circuit Academy and more, each with its own lessons and characters.
What if learning became a game?
Sur Le Fil
Play to learn, learn to play — math, geometry and electronics on a living island campus.
🖥️ Windows PC
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Free to play The whole game, at no cost
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4 languages English · Français · Español · Deutsch
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Two worlds Curious and Clever — pick the level that fits
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In-game messaging Reach the developer right from the game
Official teaser
A first look at Sur Le Fil
What you'll do
One island, a dozen ways to learn
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Real electronics
Build working circuits in a genuine simulator (ported from Falstad's engine). Wires, switches, batteries, resistors — it actually computes.
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Math that clicks
Fractions, geometry, mental arithmetic — taught through play, exams in the Grading Den, and the MathAttack tower-defense.
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Characters who teach
Prof'Fil, Kelhann and Cosinus guide the player with humour and the occasional bad pun. Learning never feels like a worksheet.
Explore the campus
One island, many doors to open
Math Corner
The cosy starting point — add, subtract, multiply and divide your way in.
Pythagorean Room
Triangles, circles and the famous theorem — geometry you can touch.
Grading Den
Sit your exams and get them marked — geometry, fractions and more.
ElectroLab
Wire up real circuits in a genuine simulator — current you can measure.
Experimentarium
Hands-on science experiments, watched over by Georg the crow.
Scriptorium
Train a real neural network to read handwriting — AI, demystified.
Grudu's Workshop
Gears, tools and a bit of tinkering — take it apart, fix it, build it again.
Robert
Program a real robot on a tropical island — your first lines of code.
Time Gondola
Board the balloon and drift into the past to meet history's great minds.
In action
See it in motion
Who you'll meet
A cast that teaches
Prof'Fil
The calm mentor with a lightbulb for a head — explains anything, never loses his cool.
Kelhann
The curious kid who asks the question you were too shy to ask.
Cosinus
A sarcastic goldfish who signs every answer “QED”.
Grudu
The campus handyman — fixes everything, fishes the rest of the time.
Georg
A thieving crow, and the mascot of the Experimentarium.
Ready to walk the wire?
Sur Le Fil is free on Steam — play it, follow the page for updates, and tell us what breaks.
▶ Play free on Steam