I wanted to create a game [that played] like the movie, with the…

According to Konami’s 25th anniversary website, the project’s original objective was to make a war game, but the MSX2 could not display many enemy soldiers on a single screen nor more than four bullets at once, so Kojima proposed a game about fleeing the enemy in the style of the film The Great Escape: with the rule of escaping without fighting, the tension of war could be conveyed without many enemies on screen.

“There was a sort of legend at Konami, that if you got involved in this project, you'd up demoted or transferred. (laughs) [...] once we got a working build running, and they saw that exclamation mark pop up when the enemy gets surprised, that sold them on the concept.”

When testing Metal Gear’s initial concept—hiding and escaping from enemies—Kojima considered it essential to distinguish two failures: that the idea wasn’t properly realized in the game, or that the idea itself wasn’t fun. In the second case he would have canceled the game; handing that decision over to marketing would have removed his ability to turn back and resulted in a typical video game.

“It would still be a hide-and-seek game, but I would create tension by adding a story to go with it.”

“technical limitations of the MSX hardware made it impossible to produce a simultaneous display of the player with multiple enemies”