If you have a mobile device and a proven ability to decipher clues under pressure—and if you have a finger that needs a ring—listen up.

The second annual Amazing Ring Race is a Seattle-wide treasure hunt brought to you by E.E. Robbins. You and your soon-to-be better-half travel the city on foot according to directions sent to your cell phone.

Working as a team (good practice! life is like a scavenger hunt, isn’t that what they say??) the two of you gather information based on those texted prompts, edge out the competition (there will be hundreds of you) with your wit, speed, and GPS programming thumbs, and the first team at the finish line claims a $15,000 ArtCarved Bridal diamond ring.

This zaniness takes place on Saturday, August 20, beginning at 10. It’ll all be over by 1, when everyone meets up at Pyramid Alehouse to cast jealous glances at the winners. Who might be you.

Did we mention that it’s free? Enter your email on the Amazing Ring Race site to see about getting signed up.