This improv game is in the following improv game categories:
The reason why the first scene should be fairly long is that it should provide enough information for other scenes to build on. The name `Deconstruction` can be interpreted as "Take a first scene, and then deconstruct it by using characters, locations, situations, played or referred to, and play/re-use those in further scenes".
For a long discussion about the format and its origin see Chicago Improv .