My kids have played these in school and they call them break out boxes. In my opinion, it should be called break in because you’re racing to break-in to the last box! There are four boxes total (one inside the others) and you have to figure out how to get into each one. You can have as many groups as you have materials for. If you have a small group of 3-5 kids then you can form two teams and have them race or just give the group a certain amount of time (45 min-one hour) and see if they can beat it. If you have a larger group, then you could make 3 small groups and let them race each other. I would suggest around 5 or less on a team. You could make as many of these as you want if you have more than 15 people, but then you would need to modify one of the clues. The other clues would all be the same.
There are four clues given to open the four boxes. The first three clues are provided and all you need to do is print them out. the fourth clue they will need Bibles. Each clue uses a different parables – Parable of the Sower, Prodigal Son, Lost Sheep, and the Parable of the Investment/Talents (Matthew 25).