New game out now: Contraptionary

Games for
the whole
family.

Fatt Cat Studio makes cozy, clever games for your phone, tablet and computer. Our first one is Contraptionary: build marble machines out of cranes, cannons, catapults and more, then press play and watch it go.

Play Contraptionary See the game
  • Free to play
  • Runs in your browser
  • iOS & Android coming soon
Fatt Cat Studio logo: an orange tabby cat in sunglasses lounging on a beanbag

How it plays

Build it. Run it. Watch it go!

Scroll down and follow the marble.

Level 5-6, Plucky Detour: placing a catapult on a half-built machine, with the parts tray along the bottom

Build it

Each level is a machine with pieces missing. Drag tracks, corners, slopes, loops and boosters into place. Aim cannons and catapults to throw the marble where no track can reach.

A marble rolling along a winding yellow and purple track high above the workshop floor

Run it

Press play and real physics takes over. Every run is the marble actually rolling, bouncing and flying, not a scripted animation. Wire up buttons, levers and pistons so one part switches on the next.

Confetti bursts over the hopper as a scientist cheers

Watch it go!

If it works, confetti flies and the scientists cheer. If it doesn't, the camera shows you exactly where the marble went wrong. Nudge a piece, turn it, try again.

What's in the box

Plays on your phone, too.

Phone, tablet or computer, right in the browser. Native iOS and Android apps are on the way.

  • Real physics

    Every run is simulated live. No two near-misses are quite the same.

  • Sandbox mode

    A whole workshop and every piece, to build whatever you like.

  • Make it yours

    Earn bolts to unlock marble skins and trails, or paint your own marble.

  • Help when you want it

    Noob, Normal or Pro. Hints show you the next step, or switch them all off.

Contraptionary on a phone: level 7-9, Winding Trickle, with the parts tray at the bottom
Coming soon to iOS & Android

10 workshops · 100+ levels and counting

From the Marble Workshop to the Grand Contraption.

  1. 1

    Marble Workshop

    Where every machine begins: a marble, a track, and gravity.

    10 levels
  2. 2

    Factory Floor

    Belts, buttons and pistons. Machines that switch other machines on.

    10 levels
  3. 3

    Machine Shop

    Boosters and loops. You place them, you point them.

    10 levels
  4. +7

    …all the way up

    Seven more workshops, right through to the Grand Contraption and Master Mechanic.

    70 levels

About us

Just a couple of dads making games.

We make games for our friends, our family and our kids, and now for you too.

Fatt Cat Studio started at the kitchen table. We like games you can tinker with, puzzles with more than one answer, and that moment when a plan you weren't sure about actually works. If it makes the kids laugh and the grown-ups say "one more go", it ships.

Play now on the web: no install, no waiting, just click and go. And for the couch-bound, Contraptionary is coming to iOS and Android soon.

  • Made by dads
  • Kid-tested
  • Family-friendly
  • Tinker-friendly

Your marble is waiting.

100 levels and counting, free in your browser. Level 1-1 takes about thirty seconds. Probably.

Play Contraptionary

contraptionary.com · iOS & Android coming soon