Puzzle game · iPhone & iPad
CORDON: Reactor Puzzle
Trap glowing energy with nothing but barriers.
Energy is loose in the reactor. You can't touch the particles – but you can reshape the space around them. CORDON is a calm, clever containment puzzle with 100 handcrafted levels.
CORDON in pictures
What is CORDON?
Every barrier grows from the spot you tap and stays fragile until it reaches a wall. Seal off pockets of the chamber, squeeze particles into ever smaller spaces, keep apart what must never meet and guide energy into collectors – with a limited number of barriers or a tight energy budget.
Ten sectors each introduce a new idea: magnets and repulsors, rhythm gates, damper fields, currents, one-way membranes, sensor plates and transmuters that turn one particle into another. The final sectors combine everything – no hints, just you and the reactor.
Why you'll like CORDON
Tap, swipe, contain
Tap to raise a barrier, swipe to aim it. Timing and planning beat fast fingers.
100 handcrafted levels
Ten sectors with a new mechanic each – and up to three stars per level for elegant solutions.
Seven kinds of particles
Steady ions, fast sparks, heavy mass, charged particles, volatile flares, multiplying seeds and phantoms that drift through walls.
Learn as you play
Press and hold anything in the reactor. The built-in encyclopedia explains every particle and device with animated demos.
Calm by design
Glowing neon visuals and an ambient soundtrack. Music, sound effects and vibration can be switched off separately.
Fair and private
Sector 1 is free. One in-app purchase unlocks all 100 levels – no subscription, no ads, no tracking, no account.
Frequently asked questions
Is CORDON free?
The first sector with 10 levels is free. A single in-app purchase unlocks all 100 levels – no subscription and no ads.
Which devices does CORDON run on?
CORDON is designed for iPhone and iPad and is available on the App Store.
Does CORDON need an internet connection?
No. CORDON plays fully offline, without an account and without tracking.
What kind of puzzle game is CORDON?
A calm containment puzzle: you can't move the particles directly, so you draw barriers to trap, separate and guide them. It rewards planning more than reflexes.
Get CORDON
Free to start · full game via one in-app purchase
More apps & games
