🔩 New from Workaholic Developers

Unscrew the planks.
Free the friends!

Every contraption in Rivet's workshop hides a caged critter — Noodle the snake, Pip the chick, Clover the bunny and more. Tap a screw whose colour matches an open tray slot, let Rivet catch it, and when a plank has no screws left it tumbles away. Clear them all and the cage swings open.

🦫 Play in your browser Meet Rivet

Coming soon to the App Store.

Rivet the beaver in a workshop catching a teal screw in front of a contraption of planks, with Noodle the snake peeking out of a cage

Six workshops, 108 contraptions

Every puzzle is built by a script and proven solvable by a solver — always with a holding cup to spare. No walls, no paywalls.

Level 1 in the Garden Shed: a simple contraption around Noodle's cage🧰 Garden Shed
Treehouse contraption with hidden screws🌳 Treehouse
Old Sawmill contraption with more colours🪵 Old Sawmill
Clock Tower contraption with four holding cups⏰ Clock Tower
Lighthouse contraption with long planks🏮 Lighthouse
Moon Garage contraption with every colour🚀 Moon Garage
The win screen: Bramble the hedgehog is free🎉 Free!
Zen mode with unlimited holding cups🌊 Zen
Rivet: a copper-brown cartoon beaver with a yellow hard hat, a teal tool belt and a big screwdriver

Meet Rivet

A busy beaver with a tool belt, a tiny hard hat and a plan: every screw you free lands in his paws, every plank you drop goes into his river — and bit by bit, Rivet's dam gets built.

  • 🔩 Tap a screw that matches an open tray slot. Three of a colour close the slot and the next colour opens.
  • 🥣 Grey cups hold screws that match nothing yet. When their colour opens they jump in by themselves.
  • 🪵 No screws left? The plank tumbles away with a satisfying clunk — and shows what was hiding underneath.
  • 🐍 Clear every plank and the cage opens. Noodle and his friends hop out; Rivet gets a plank to chew.
🧠

Proven fair

A solver clears every one of the 108 contraptions with one holding cup fewer than you get. There is always a way.

👻

Ghost screws

Screws hiding under a plank show through as faint knots, so you can plan which plank to free first.

📅

Daily contraption

A fresh puzzle every day, built and proven on your device from the date — the same for everyone. Keep your streak!

🌊

Zen workshop

Unlimited holding cups, no stuck, no stars. Just unscrew, breathe and free the critters.

🪵

Build Rivet's dam

Freed screws and fallen planks build the dam piece by piece: logs, mud, a flag, a lodge, a water wheel, fairy lights.

↩️

Undo and hints

Undo is free. The bulb shows the next safe screw (it costs a star). Keep a cup free for three stars.

🔺

Colour-blind friendly

Every screw and every slot carries a shape as well as a colour. Switch symbols on or off in Settings.

🎨

Wood sets

Earn stars to unlock honey oak, cherry, candy stripe, frosted and galaxy planks.

🛡️ Safe and fair for kids

Made by Workaholic Developers

We design and build apps, games and software people love — and Noodle's games are made with the same care. Have an idea? Let's build it together.

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