Metal Gear Solid: The Twin Snakes is an action-adventure stealth video game co-developed by Silicon Knights and Konami Computer Entertainment Japan for the GameCube video game console in March 2004.

The Twin Snakes features graphical improvements over the original, new cutscenes written and directed by Ryuhei Kitamura, and gameplay functions originally introduced in the sequel Metal Gear Solid 2: Sons of Liberty. The game includes a revised translation with re-recorded voice acting using almost all of the original English voice cast. The game was met with positive reception.

The gameplay of The Twin Snakes was altered to resemble that of Metal Gear Solid 2: Sons of Liberty. While all of the original areas and enemies were kept, new ways for the player to combat them were introduced, such as the ability to shoot from a first-person view. Enemy AI was improved, giving enemy soldiers the ability to communicate with each other and detect the player more intelligently with senses of sight and sound enhanced.