Cairn Cache Builder

Build a one-tap tower-stacking geocache. Drop each slab clean, stack it high, unlock the reveal.

Free, just a username and passphrase, no email. Caches you build show up in My Caches so you can reopen and edit them without hunting for the edit link, and watch plays and wins. The same account syncs My Puzzle Texts across devices and manages your short links.

My Caches

Play your own cache before you publish it

Settings that look fair in this form can be brutal, or trivial, in the field. Finish the game yourself, start to end, on the kind of device your finders will use, and check that the difficulty, timers, hints, wording, and the final reveal all behave the way you intended. Every cache you create here comes with a play link and an edit link, so you can test it, tune it, and test it again before anyone else sees it.

I will play this game through myself and confirm the settings match what I intended before I share it with finders.

Cairn is a one-tap stacking game seen in isometric 3D. A slab slides back and forth above the top of the tower, and there is one control: tap anywhere. The tap drops the slab. Whatever part of it overlaps the slab below survives and becomes the new top, the overhang shears off and tumbles away, and the next slab arrives across the other axis, so the tower narrows from two directions at once. Land one dead center and it snaps into line, grows back a little, and starts a streak, and the longer the streak runs the louder the screen gets. Choose the mode, the painted background, how forgiving the perfect window is, how fast the slabs speed up, and how far a player has to get. Reaching your goal reveals the final coordinates or keyword.

The whole run is replayed on the server. The browser records only the moments a player tapped, and the server rebuilds the same slabs and drops those exact taps itself before it accepts the run, so a tower that was never really built cannot be claimed. A run also cannot be submitted faster than it could have been played. Your reveal is not in the page until the server sends it, and it is banked the moment the goal is passed, so a slip on the very next slab costs nothing.

Anything you create here is public to anyone with the link, and you are responsible for what you publish. Keep a copy of your edit key, it is the only way to change or delete your cache later.

Your cache

Title

Geocache code (optional)

Shown to players as a link to your cache page.

Your email (optional)

Only the site admin can see this, in case they need to reach you about your cache. Never shown to players.

Hint (optional)

Intro message (optional)

Intro image URL (optional)

Game settings

Look

Background

Mode

The mode decides what your goal counts. Classic, Steady Hand, Wind and Sudden Death count slabs stacked. Precision and Perfect Run count perfect placements in a row, so their numbers are much smaller.

Perfect window

Speed ramp

1 is a slow, patient slab. 5 speeds up hard as the tower grows. A faster ramp lowers how far anyone can reasonably get, so the goal range below moves with it.

Perfect placements in a row

On solve, reveal

Shown only after a player meets your goal. Reveal either the final coordinates or a keyword, not both.

Coordinates Keyword

Final coordinates

Message (optional)

Image URL (optional)

Where can I host an image for free?

Paste a direct https:// link to an image. Free image hosts that give a direct link include ImgBB, postimages.org, and Cloudinary. A geocaching.com image link works too. The link must start with https://.

I understand this cache is public, contains nothing sensitive or inappropriate, and I am responsible for its content. I also understand that caches which sit unused are removed automatically: one that is never played is deleted six months after it is created, and one with no plays for two years may be deleted.

Keep your cache in play to keep it live. Share the play link so people visit it; unused caches are cleaned up over time.

Live preview

My Cairn cache

Reach the goal to reveal the cache.