§ Quests // Sioux Falls, South Dakota
Sioux Falls, South Dakota

Operation Falls Sentinel

Two men shaped Falls Park, and both left their marks on purpose: a future senator's flour mill and an Edison man's powerhouse. Six objectives, about a mile on foot, from the stone viewing tower past the falls, the mill ruins and the overlook to Jacobson Plaza. Prove you belong here.

A hand holds a phone showing the Falls Sentinel tactical map, with the falls of the Big Sioux River behind at golden hour
Live op
06Objectives
1 miOn foot, about
1 hTypical time
All agesEasy walk
§ Route // the walk

Where you'll walk

Start at the Falls Park Viewing Tower and finish at Jacobson Plaza. About a mile on park paths around the falls, one way, with the stops in between revealed as you play.

Route map of Operation Falls Sentinel in Falls Park, Sioux Falls: six numbered stops from the Viewing Tower, around the falls, to Jacobson Plaza
§ Recon // field photos

Where the quest takes you

Real places, all in Falls Park. Highlights: the stone viewing tower, the falls of the Big Sioux River, the 1881 Queen Bee Mill ruins and the overlook above them.

§ 01 // In the field

What to expect

A walk through Falls Park with puzzles on its landmarks. Everything is outdoors and free: no tickets, lines or opening hours.

01

Start at the tower

Begin at the Falls Park Visitor Information Center and Viewing Tower. The team plays on one phone, in its web browser.

02

Walk and solve

Each objective asks you to find something real: a count, a year, a shape, a name. Every puzzle has three free hints, and the third is the answer.

03

Transmissions from Operations Center

After each stop, tap play for a short in-game transmission from Operations Center: what you found and where to go next. Every message also appears on screen.

04

Bonuses for sharp eyes

An off-book signal hides along the route for a bonus badge, and on the long walk you can send photos for an analyst's read. Skip them and you still finish.

Route // one way
StartViewing Tower
FinaleJacobson Plaza
ParkingAny Falls Park lot, free
AccessFree, outdoors
RestroomsVisitor Center, picnic shelter

Paths run close to fast water and wet rock. Stay on the paths and platforms and keep children close.

§ Reward // digital badges

Finish it. Earn the Falls Sentinel.

Complete the quest and the Falls Sentinel badge is yours, saved on your phone at the finale. Decode an off-book signal hidden along the route and you earn a second, bonus badge.

The Falls Sentinel badge: a stone watch tower between two waterfalls over pink quartzite
Quest badge
Bonus · classified

Digital badges, shown in the game. No physical item is shipped.

Field kit laid out on dark slate: a phone showing a map of Falls Park, a brass compass, a field notebook and a chunk of pink Sioux quartzite
Field kit · Falls Park, Sioux Falls
§ 02 // Quest pass
$20

One price for your whole team, played on one phone.

Buy this quest · $20

Secure checkout on play.questthecity.com. Your play link arrives by email.

Your whole team$20
Your play linkBy email
PassGood for one year
RefundsFull, within 30 days
App or accountNone needed
Quest FAQ
How long is the pass good for?

One year. Play on the day that suits you; the link waits.

Can I get a refund?

Yes. Full refund within 30 days of purchase. Reply to your order email.

What if we lose signal?

Open your link once with signal, before you head out. After that the quest keeps working if service drops between stops.

Do we need an app or an account?

No. It runs in the phone's web browser. Nothing to install, nothing to sign up for.

How many phones do we need?

Just one. Your whole team can play on one phone. If you'd like more, you can add phones when you check out. Bringing a school or youth group? See Groups.

Is the observation tower part of it?

No. The tower is open during Visitor Center hours and worth a trip up, before or after, but the quest works from the outside at any time.

Is it safe for kids?

It's a walk on park paths, with steps and fast water nearby. You're responsible for your group's safety: stay on the paths and platforms and supervise minors. Full details in the terms.

Also in the network

Operation Liberty Tree · Annapolis, Maryland · and Operation Long Shadow · the National Mall, Washington, DC.

See every quest