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
Just wait here while I get the plan out.*Starts looking for the plan in his backpack* *Fails to find it* Oh wait... There is no plan! We simply barge into the bank.
Moron! The best way to rob a high security bank is to simply barge into the place with our entire force and get through to our target. When we find our target, destroy a couple of walls and then the getaway.
Quiet and be patient. *Unrolls plan and places it on the floor* So this is the map of the bank. We have to do this and...*Keeps telling everybody about the plan and their roles* Ok. Got it in your head?