tobiasbuilds.

INDEPENDENTLY CURIOUS

Serious about
playing.

I build playful software for curious minds. Little experiments. Unexpected discoveries. A good excuse to see what happens.

Explore the projects Made out of curiosity. Yours to play with.

FROM THE LAB

Follow your
curiosity.

Build a robot. Draw something. Explore a new world. Everything here is ready to play.

TB–01Build & create build · wire · testRobot FoundryShape a machine from physical parts, wire sensors to motors, then find out whether your idea survives the test arena.App language: EnglishOPEN THE FOUNDRY TB–02Build & create shape exact robot partsTobias DesignerSketch and combine exact 3D parts in one focused browser workshop, then send mounts and colliders straight to Robot Foundry.App language: EnglishOPEN DESIGNER Mindustry gameplay on the snowy Ground Zero map, showing the core and player unitTB–03Simulations factory strategy in your browserMindustryPlay the complete solo Serpulo campaign in your browser. Build supply lines, defend your core and conquer the planet — no installation required, with progress saved locally.English interface; language options in SettingsPLAY IN YOUR BROWSER TB–04Simulations evolution gamePrimordial SoupBuild a cell, survive the primordial sea, and evolve generation after generation. Real biology, disguised as a game.App language: EnglishSTART EVOLVING TB–05Learn learn PythonROVERWrite your first Python program and steer a rover 225 million kilometres away. Mission control is you.App language: English / DutchJOIN THE MISSION TB–06Simulations learn investingTobiasTradeGet $10,000 in practice money, do your due diligence, beat the SPY mirror, and decide together as a group.App language: EnglishOPEN THE FLOOR TB–07Learn practice mathMathExplore a library of maths topics, from arithmetic and fractions to algebra and precalculus. Choose a topic and practise with worked help.App language: English / DutchSTART PRACTICING TB–08Build & create factory strategy with numbersThe Math FactoryBuild equations into supply lines, arm turrets with formulas, and take back four number systems from machines that steal, shoot and adapt.App language: English / DutchENTER THE NUMBER WORLDS TB–09Learn learn US geographyGeoGet to know the United States and the world on a real spinning globe: states, capitals, cities, rivers and countries.App language: EnglishSTART PRACTICING TB–10Learn learn to touch-typeTypingLearn to touch-type calmly and playfully, with a keyboard that plays along, stars and mini-games.App language: English / DutchSTART TYPING TB–11Build & create build a bridgeWobblewayBuild across 16 crossings with road, wood, steel and cable. Then send the car and watch real physics find every weak spot.App language: English / DutchBUILD THE BRIDGE TB–12Build & create build a real computerSwitchStart with one switch and one lamp. Build gates, a math heart, memory and a clock — until a real computer runs on your screen. No account; everything stays in your own browser.App language: English / DutchSTART BUILDING

A LITTLE EVERY DAY

Same curiosity.
Fresh challenges.

A few minutes. A fresh puzzle. See you tomorrow?

A new beginning, every midnight in Amsterdam.