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 be cool guys, we need to figure out who is driving the train right now. if nobody is, then either one of us need to find a way to stop it, or jump out before we crash somewhere.
Knights of the Grand Motor have appeared on this train. As it seems, they're the ones who are driving this train. Trouble is, they're heavily armed with technology 100 years into the future.
(Oops. wrong one. let me quickly reword that.) So it's a truce. Also, the Knights of Grand Motor are a terrorist organisation who mainly use vehicles to either blow up or destroy places.