Metal Gear Solid 2: Sons of Liberty - Beta Trailers

The first trailers of Metal Gear Solid 2, with beta and cut content.

Wikipedia:
The creator Hideo Kojima's original design document for the game was completed in January 1999. The Japanese document was published by Konami in 2002, and translated into English in 2006. It mentioned that the game was originally going to be called Metal Gear Solid III to symbolize Manhattan's three tallest skyscrapers." The document outlines new game mechanics and features, such as bodies that need to be hidden, enemies being able to detect shadows, lights in an area that can be destroyed to affect enemy vision, realistic enemy AI that relies on squad tactics rather than working individually, and multi-level environments that add an element of "vertical tension" to the stealth gameplay. It also outlines themes, such as passing on memories, environmental issues, and particularly social themes regarding the "digitization of the military," digital simulations, the "digitization of operational planning," the "digitization of everyday life," and the "effects of digitization on personality." The document stated that the "aim of the story" involves "a series of betrayals and sudden reversals, to the point where the player is unable to tell fact from fiction" (departing from the "very clear and understandable story" of its predecessor), that "every character lies to (betrays) someone once," blurring the line between "what is real, and what is fantasy," and "ironies aimed at the digital society and gaming culture."

The game's production budget was $10 million. Kojima states that when he "heard about the hardware for the PlayStation 2," he "wanted to try something new. Up to that point, all cutscenes had focused more on details like facial expressions, but I wanted to pay more attention to the surroundings, to see how much I could change them in real time."