Moriarty's Game: The Professor's Invitation by HiddenCity

This is the 3rd HiddenCity scavenger hunt I’d done in London. 2 with my partner and 1 with my daughter. I really enjoy the cryptic clues and the way they incorporate actual shopkeepers and bar staff into the stories. Good value considering how long it keeps you occupied and the number of different sites I’ve seen.

Brilliant mystery quiz tour. You really do need to get your brain engaged. Very testing but good clues throughout he game. Everyone gets immersed with the game. Highly recommend this game.

Great idea, really good problem and clue solving game that takes you around some great parts of London, the clues made you think but we're sensible. There was always an option for help along the way. Great places to have a drink on the way also.

Have done three adventures with Hidden City, once with friends, enjoyed it so much have used them as group social activities! And I'll definitely be back to book another, everyone always loves them! Super easy to use, and set up, as well as adding people

What an experience. Such a great experience to immerse ourselves in messages, puzzles, clues, treasure hunting and secret messages with real world people! Such a great thing to do we had a blast

We had a lot of fun this afternoon. It was such a great way to get teenage son off his screens and out of the house!! I left him to read the clues out and we worked it out together. Loads of fab places to stop for food also really helped. We both thoroughly enjoyed it.

These are great adventure games around London, not a vast distance covered but hunting for clues in public spaces with game options via what’s app all add to the atmosphere and having to go into shops / pubs and ask for coded items add to the fun and excitement. Definitely recommended to visit parts of London, never seen before, proving depends on time of day, so if you can book mid week for cheaper times

This is the second of these games that I have done. Great way to see parts of London. Clues were great. Love the twist in the middle, deciding who's side to be on. Great value for money.

We did the 007 one which we loved. However, today we did Sherlock Holmes and it was really basic compared to 007. The clues were very similar to each other and the challenges at the rest stops were far too easy. With 007 we spent ages cracking the clue with the brief case however it took about 5 minutes to solve the clue in the pub which then forced an hour rest break on us. The end for 007 was brilliant too, iykyk but the end for Sherlock Holmes was a disappointment. Also seriously missing a trick not going towards Baker Street from Marylebone.

We had booked Moriarty’s Game today at 11 a.m. Impossible to start the activity: we never received the text messages essential to launching the game. Since this morning: * impossible to reach anyone by phone (the number does not seem to accept incoming calls); * 8 emails sent; * always the same automatic response; * no response from a real person. We came specifically for this activity and lost several hours of our day in London. If you are a foreigner, and in particular if you use a non-British phone number, beware: without receiving SMS, there seems to be no effective customer support to solve the problem. We are still hoping for a response and a solution, but as it stands, our experience is extremely disappointing.