It does not have to be about escape. Why not find something in the room instead, hidden behind set of puzzles? Another popular thing is location games. You rec

It does not have to be about escape. Why not find something in the room instead, hidden behind set of puzzles? Another popular thing is location games. You receive a book of puzzles in the form of "find X on a street Y near house Z" (some unusual features). You then need to solve travelling salesman problem while solving puzzles and recording answers. Some puzzle sets are bike-oriented, some assume you travel by public transport, some car-oriented.