Duplex
Land both tokens on their goals to clear the level. Arrows / WASD / swipe move BOTH at once — amber Echo mirrors you. Use walls to split them. ↩ Undo · R restart.
How to play
- Press an arrow key (or WASD, or swipe) and both tokens move at once — You in blue, Echo in amber.
- Echo moves along the level’s mirror axis, so it may travel the opposite way, or at right angles.
- A token blocked by a wall or edge stands still while its twin keeps going — that is how you break the symmetry lock.
- Collect the pellets and land both tokens on their goals to clear the level.
Strategy & tips
- Walls are the tool, not the obstacle. Park one token against a wall so a shared press moves only the other.
- Work backwards from the goals — figure out the final press, then what has to be true before it.
- Watch the move counter: match par to earn three stars, so hunt the shortest path rather than any path.
- On diagonal axes, think in terms of which press separates the tokens rather than which press advances one.
- If you are stuck, reset and replan. The levels are built around one clean idea, not long grinds.
FAQ
How do the two tokens move?
One press drives both. You steps the direction you pressed; Echo steps the direction the level’s mirror axis dictates — horizontal, vertical, point, diagonal or anti-diagonal.
How many levels are there?
17 hand-built levels across five mirror axes, each introducing a new way the reflection behaves — plus a fresh daily puzzle.
How do I get three stars?
Clear the level in par moves or fewer. Par is the shortest possible solution, so three stars means you found the optimal path.
Is Duplex free?
Yes — it plays free in your browser with no download or sign-up, on desktop and mobile.