The game is very similar to this except it's impossible to do it all in 90 seconds here.
Rules are simple: starting person makes a scenario and starts a sentence with a letter. The next person starts another sentence with the next letter, the person after that does the same and so on. When we eventually reach the starting letter, the person who hit that letter creates a new scenario, picks a new letter, and it starts over.
Example: (starting letter = B, scenario = the office building's on fire) Person 1: "Bring me this month's financial reports." Person 2: "Can't you see the building's on fire?" Person 3: "Does it matter?" Person 4: "Everyone else is evacuating."
Ok now it starts Scenario = You're on the Titanic when it crashes into the iceberg; Starting letter = J
You think a toasted Reuben sandwich will be of any use here? Give me that, we all know how this fits in to the current scenario, that I have no clue what it is, because after reading the ls five pages it's unclear exactly what's going on. This sandwich is Pang's only weakness. We can use it to defeat him and his ghost henchmen (who has just handed over the sandwich to me). AHaha! ha-haha-haha-haha! Haha-haha-a-hahaha! Hahahahah!
*burning something* Well, thanks a lot, guys, I'm dead. You have a ghost that likes to set things on fire on your side. *burning more something* Oops, the sandwich is on fire.