Case 001 · In testing
Maribor 1681 — The Black Seal
Historical investigation · Medium → Hard
A physician discovers that some of the dead were never sick. Then he disappears — leaving the city itself as evidence.
Maribor, Slovenia · Case 001 open for testing
The plague is ending.
The plague is ending.
A crime is only beginning.
Follow a vanished doctor's clues through historic Maribor and uncover a conspiracy hidden in plain sight.
Open call · Testers wanted
The Black Seal is ready. Now it is your turn.
Case 001 is finished and fully playable on the streets of Maribor, and before it goes on sale we are giving it away to a small group of test teams. This is not homework. It is roughly two hours of entertainment — a good way to spend a Sunday in Maribor with friends or family. Play it, enjoy it, and afterwards tell us what worked and what did not.
How to join
- Type your email address in the box below. That is the whole application — one field, no sign-up with us.
- No Questo account? Don't worry about it. Questo is free, an account takes seconds to create, and the instructions come together with your invite.
- You get an invite that unlocks the case for you, free of charge.
- Play with 2–5 people, on any day, at any hour that suits you.
- Then tell us everything: dead ends, ambiguous answers, hints that came too late — and what you would have paid for it.
- And if the case earns it, leave a review and a five-star rating on Questo. For a brand-new case that is the single biggest help you can give us.
If you already use Questo, share the address your account is registered with — an invitation sent to a different address cannot unlock the case.
Thank you — your address is with us. Your Questo invite for Case 001 is on its way. If it is not in your inbox within a few minutes, check Spam, Junk and Promotions.
Prefer Instagram? Send your address as a DM to @enigvia. Or write straight to info@enigvia.com — one line with your address is enough.
One city, multiple mysteries
Maribor has two open cases.
The same streets, two completely different games. Case 001 is an investigation: who did it? Case 002 is a mission: can we stop it?
Case 002 · Coming soon
Maribor 1532 — The Cobbler's Run
Mission · city defence · Medium
An Ottoman army is closing in and the moat is dry. One apprentice volunteers to reach the water gate before sunrise.
Case 001 · Maribor 1681
The Black Seal
Maribor, 1681. The plague is finally leaving the city. But the physician Johann Meran has found something worse: some of the dead were never sick, and some may not be dead at all. Before he can expose it, Meran disappears.
Your investigation
You pick up Meran's trail where he left it — in the death registers, the seals and the property transfers of a city still counting its losses. Fifteen steps take you across roughly eight historic locations, from the main square to the towers on the river.
Every lock in this case is opened by something physically present in Maribor: what is carved into a monument, what is written on a façade, what has stood in the same place for centuries. Nothing is guessed. Everything is deduced.
The locations, architecture and historical context of 1681 Maribor are real and researched. Johann Meran, Friedrich Wolf, Helena Wolf and the conspiracy itself are fiction.
The route
- Glavni trg — the main square
- Kužno znamenje — the Plague Column
- Rotovž — the Renaissance town hall
- Židovski trg — the medieval Jewish quarter
- The Synagogue — one of Europe's oldest
- Židovski stolp — the Jewish Tower
- Vodni stolp — the Water Tower on the Drava
- Stara trta — the world's oldest vine
- Sodni stolp — the Judgement Tower
A continuous walking loop through the old town and the riverfront. Every required observation is made from public space — no entrance fees, no opening hours.
15Steps
~8Historic locations
120–150Minutes
2–5Players
Closing rank
How well did you read the city?
Your score at the finale decides which title the case closes with.
Apprentice Investigator
You closed the case — with help along the way.
City Detective
You read the streets well and needed few hints.
Keeper of the Seal
You caught the forgery before the case pointed at it.
Master Investigator
Near-flawless. You saw the pattern several steps early.
The Meran Circle
A perfect case. You found what Meran himself never proved.
Case 002 · Maribor 1532 · Coming soon
The Cobbler's Run
In 1532 an Ottoman army threatens Maribor. The city's defensive moat is dry because the water was never released in time. A young cobbler's apprentice named Jožek volunteers to reach the water gate.
The mission
Jožek disguises himself, leaves the city at first light by the fortifications and makes his way toward the Three Ponds below the Pyramid hill, slipping past — and sometimes walking among — enemy patrols. If he reaches the gate and releases the water, the moat fills and the city can hold.
You are not reconstructing what happened. You are running it. This case is a race with a clock, built on route decisions, patrol patterns and a multi-stage mechanism at the water gate.
The Ottoman raids and Maribor's fortifications are historical. Jožek's specific route and actions come from a Maribor legend, and the case says so plainly.
Mission hook
Follow Jožek's path. Reach the Three Ponds. Open the gate.
Save Maribor before sunrise.
- 90–120 minDuration
- 2–5Players
- 15 stepsRoute mission
- MediumDifficulty
Practical
What you need.
One smartphone
The case runs in the Questo app. One phone per team is enough — bring a charged battery.
Comfortable shoes
A continuous walking loop through the old town and along the Drava. Cobblestones throughout.
Daylight helps
Playable at any hour, but several clues rely on reading carved detail — daylight makes it easier.
No booking
No guide, no fixed start time, no group to join. Buy it and start when you like.
Three languages
Slovenian, English and German. Pick your language when you start the case.
Ages 12+
Designed for adults and teenagers. Younger players work well as part of a family team.
Getting there
The case starts on Glavni trg.
Maribor's main square, in the middle of the old town. No ticket desk and no host — gather at the Plague Column, open the app, and the first clue is already around you.
On foot from the station
Railway station, Partizanska cesta 50, with the bus station beside it. Walk west along Partizanska cesta to Slomškov trg, then left down Poštna ulica onto the square. About 1.1 km — 15 minutes, flat.
By car
A1 motorway, exit Maribor–center, then follow Center. Slovenian motorways need an e-vignette. The old town is pedestrian: park at Garažna hiša Tržnica, City Parking or Garažna hiša Center and walk the last five minutes.
From further away
Roughly an hour from Graz, an hour and a half from Ljubljana, under two from Zagreb — direct trains from all three. Graz and Ljubljana are the nearest useful airports.
The square is pedestrian and open at all hours, and nothing in Case 001 depends on an opening time or an entrance fee — you can start whenever you like. Open the start point in Maps.
Case 001 · Open for testing
Can you find the Black Seal?
He left the city as evidence. Everything you need is still standing.