
Hideo Kojima was on the verge of canceling Metal Gear Solid 2 and resigning from Konami after the events of September 11, 2001.
The end of Metal Gear Solid 2 sees Arsenal Gear - a giant submersible fortress - crash into Manhattan. In-game, the scene simply jumps from the ship speeding across the ocean to it sitting amid several ruined New York buildings. A few behind-the-scenes details released over the years made clear that scenes of Arsenal Gear crashing into the city were removed in the wake of 9/11.