The program can definitely be used outside of a regular a school/classroom setting provided you have a projector available.
The resource works best when:
It's led by an adult facilitator with experience of working with kids
Facilitators are able to print the accompanying paper materials needed ahead of time and have basic writing/drawing materials on hand
You allow at least a week between modules so that kids have time to undertake their at-home missions
The same group of kids can consistently participate each week, because the program develops over time and kids report back on their missions the following week