How to play
Every day there is one factory board and one thing to produce. Connect the deposits to the output, press Run, and watch it work.
Need a deeper reference? Read the Cogli machine and modifier guide.
Building
- Pick a component, then tap a square to place it. Select Belt and drag across open squares to paint a route.
- Tap a component you placed to turn it a quarter turn. On desktop, you can also use R or the rotate control.
- Choose Remove and tap a component to take it back.
- On a keyboard: move with the arrow keys, place or turn with Enter, and use the buttons below the board for the rest.
The components and board tiles
- Clock gate
- A fixed gate with a repeating admission window. The fraction shows open ticks / cycle length; its shutter shows whether it is open now. Feed from behind its arrow. Items wait safely until the next opening, so keep the supply queued and use Pause to study the timing.
- Resource filter
- Only the pictured resource may enter this fixed part. Other items stay upstream, allowing a priority gate or splitter to send them along another route. Accepted items leave by the arrow. A filter never destroys resources.
- Deposit
- Pushes out a resource every couple of ticks, always in the direction it faces. Some deposits hold a limited amount — when the number runs out, that is all you get.
- Belt
- Carries one resource, one square, in the direction it points. A belt takes resources in from any side except the one it points at, so corners need no special piece — just turn the belt.
- Crossover
- Carries two independent lanes across the same square without mixing them. Its main arrow shows one lane; the crossing lane turns right from it.
- Priority gate
- Accepts a straight input and prefers the arrow route. If that exit is blocked, it turns the resource right instead.
- Splitter
- Resources enter the stem and leave alternately from the two sides. If one side is backed up, the splitter sends everything the other way until it clears.
- Sorter
- Sends the chosen resource to its matching side and everything else to the other side. It is available only on puzzles that give you one.
- Merger
- Combines up to three incoming lines into one. It takes turns between them, so no line is left waiting while another hogs the route.
- Maker
- Holds ingredients until it has a full recipe, works for a moment, then pushes the finished product out of the side it faces. It will not take anything in through that side.
- Output
- Accepts the product you were asked for and counts it. Anything else is turned away and will back up behind it.
- Obstacle
- A blocked square. You cannot place on it, so route around it or use another fixed tile to cross the board.
- Gravity well
- Pulls a resource in from the side opposite its arrow, holds it for one tick, then ejects it in the arrow direction. It is fixed to the puzzle.
- Wormhole pair
- Matching letters mark two fixed endpoints. A resource entering one reappears at the other and leaves in that endpoint's arrow direction.
- Magnet
- Accepts iron and copper from any side, then ejects them in its arrow direction. It is fixed to the puzzle and cannot be placed.
- Buffer
- Stores resources until it is full, then releases the batch one item per tick in its arrow direction. It is fixed to the puzzle.
Recipes
- 1 Iron → 1 Plate
- 2 Iron → 1 Cog
- 1 Copper → 1 Wire
- 1 Plate + 1 Wire → 1 Circuit
- 1 Plate + 1 Cog → 1 Engine
Stars
One star for making it work. Two for doing it inside the component budget. Three for matching the tightest build we know of. Solving it is the achievement — the other two stars are the reason to come back to a factory that already works.
A new one every day
Everyone in the world gets the same puzzle, and it changes at midnight UTC. You can play without an account; sign in if you want your history, streak and statistics synced across devices.