Prison cell
From the Metal Gear Wiki
A prison cell is where a detained prisoner is placed and are a common element in the Metal Gear series. In almost every game, the player is tortured in some manner or another, never failing to be locked in a cell afterwards. This often leads to an escape challenge.
The first prison cell sequence in the games exists in the original Metal Gear, during which the player must punch through a wall with an iron glove to escape, this being in the case of the NES edition. The concept was expanded in Metal Gear Solid/Metal Gear Solid: The Twin Snakes. Following Revolver Ocelot's infamous torture sequence, Solid Snake must trick the guard, Johnny Sasaki, into entering the cell, either by playing dead using the ketchup or by hiding under the bed, and then escape after disarming him. If the player misses their chance twice and uses both the ketchup and the bed, then Gray Fox will open the door for Snake.
In Metal Gear Solid 3: Snake Eater, an almost identical sequence exists, even to the point where the guard is Johnny Sasaki's grandfather. The only major differences are that death must be faked using the Fake Death Pill rather than ketchup, or an alternate solution, whereby Naked Snake can call a secret frequency to open the door himself, is implemented. It is also possible to trick the guard into entering the cell by eating spoiled food or by going into "Cure" in the Survival Viewer and spinning Snake around with the right analogue stick, forcing Snake to vomit. Hiding under the bed this time simply gets a bewildered response from the guard, leaving him puzzled about where Snake has gone.
In Metal Gear Solid 2: Sons Of Liberty, a cell aboard Arsenal Gear (almost identical to the cell from MGS) makes an appearance. Although Raiden is tortured briefly by Solidus Snake here, there is no real escape challenge because Olga Gurlukovich automatically releases Raiden's restraints.
In Metal Gear Solid: Portable Ops, the player has to rescue Naked Snake from a prison cell after he was captured and tortured by Cunningham. Naked Snake also breaks out of a prison cell in the beginning of the game.
