Escape Live, which was only launched in January, runs live games for teams of up to five people who work to crack puzzles and escape from a locked room.
The company, based in Henrietta Street, is now top of Trip Advisor’s list of Fun & Games in the city after having already welcomed more than 8,000 visitors.
Now, the company is in the process of creating two new themed rooms at its existing location in Birmingham, and is opening another venue in Southend-on-Sea in Essex.
Joint owners of Escape Live, Jas Sodhi and radio DJ John Dalziel, said they have been overwhelmed by the popularity of the games.
Dalziel said: "The reaction to Escape Live has far exceeded what we ever expected.
"We now have customers who have been in to escape from one room then rushing back to do the second, then emailing us afterwards asking us to open a third and fourth – so it seemed only fair to satisfy their thirst for more!"
As well as local people seeking a challenge, the venue has also been well received by local companies for team building exercises and corporate events.
He added: "The corporate market has really boomed for us and we’re currently working with some massive companies which are based locally, including the likes of Deloitte, Vodafone and the West Midlands Fire Service.
"Nando’s are our most popular corporate visitors though – they’ve even been known to bring in teams of people that the company hadn’t even hired yet, purely to see how the individuals would get along in a team environment!
"The escape rooms really are for everyone – stag and hen do’s, students, couples and families alike all visit and enjoy the experience so much they make repeat visits afterwards.
"We are now in the final stages of building the Essex location which is due to open in late 2015, but we’re not just looking to stop there – so for anyone interested in franchise opportunities with Escape Live, feel free to get in touch."