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GPS scavenger hunt · RPG adventure

The Iron Heart of Gas Works

All you need is a phone — follow the map to each pin and open the card waiting there.

Live now Walkable Made with AI

Seattle, 1956: the gasification plant on Lake Union is shutting down for good, and a humming radio picks up a message from the last shift of operators. Decode the riddles left in the concrete, gather their tools, and unlock the Iron Heart in the boiler house before the plant goes dark.

Your quest — find what unlocks the boss, then beat it.

2 days 13 hours left

The board resets .

Cards to discover
19
Estimated difficulty Hard
Easy
Medium
Hard
Very hard
Join the trail Get directions
  • Free to play
  • No app to install
  • No sign-up to play

Join within 200 metres of the start. One phone per team.

Run by Eggtrail · in Seattle

The deck

What your team is hunting

Every card waits at a pin on the map. Preview the cards, then head out to discover them.

  • Start
  • Weapon
  • Item
  • Treasure
  • Question
  • Foot Soldier
  • Ally
  • Checkpoint
  • Merchant
  • Trap
  • Monster
  • Event
  • Boss

Hover over or tap a pin to preview its card. Your team joins at the flag.

Before you set out

Start here 2101 N Northlake Way, Seattle, WA 98103

Started
Board resets
Every Wednesday at 3:00 AM PDT
Next reset
Suggested age
12+
Languages
English

Bring a phone with internet access. Allow location access outdoors to discover cards as you reach their pins.

Every hunt is played on real streets and paths. Read the terms and conditions before you set out — teams play at their own risk.

Team visits
Be the first
Getting around
Walkable
How you play
RPG adventure

Counts teams that joined across all days, including return visits.

How it works

Three steps to the treasure

  1. Get to the venue

    Bring a phone with internet access. The cards are already waiting there.

  2. Join at the venue

    Tap Join nearby within 200 metres of the pin. No app to install, no sign-up.

  3. Follow the pins

    Each card is treasure, gear or a monster. Collect, fight and trade your way up the leaderboard.

Your adventure starts here

Where to play

2101 N Northlake Way, Seattle, WA 98103

Get directions

Bring a phone with internet access. Allow location access outdoors to discover cards as you reach their pins.

Join the trail

At the venue? Join within 200 metres of its pin. We check your location before creating your team.

Browsing creates no team or guest account. Your position is checked for this join and is not saved.