Ape Escape 3 is a platform video game published and developed by Sony Computer Entertainment for the PlayStation 2 video game console.
Playing as either Kei or Yumi, gameplay follows that of the previous games in which the player must catch several monkeys by using various gadgets controlled with right analogue stick. While there are fewer gadgets in this game than previous entries, a new feature in this game is the ability to morph into different forms through a device built by Aki. Some monkeys may also try to steal the player's Stun Club or Time Net and use it against them, and can even force them out of the level by catching them with their own net. Playing as Yumi has an additional benefit; owing to her pop idol status, certain monkeys will go star-struck upon sight of Yumi, allowing for an easy capture.
A minigame featured in the game is Mesal Gear Solid: Snake Escape, a spoof of Metal Gear Solid. In this game, players control Pipo Snake, a monkey loaded with Solid Snake's battle data, sent on a mission to rescue Snake and destroy a monkey-like Metal Gear. Gameplay is similar to Metal Gear Solid in which players have to use stealth and weapons to sneak around undetected and rescue prisoners. Players are equipped with a Banana Pistol for stunning enemies and Pineapple Grenades for breaking open flimsy walls. Similarly, the original PlayStation 2 editions of Metal Gear Solid 3: Snake Eater include a Snake vs. Monkey mode in which Snake has to capture monkeys.