Metal Gear Solid 3: Snake Eater is a video game released on PlayStation 2.
Snake Vs. Monkey Edit
There is a mini game dedicated to catching the apes from the game. The goal was to collect them all in the time limit and you only have four levels to start with more adding as you progress through the game. For winning all of the levels you could unlock a monkey mask for Snake to wear.
Noticeably they don't wear their pants probably due to the fact they are simple apes in the forest. They are also easy to catch as you can stun them, then just go up and touch them.
Because of how popular this was, a mini game based on Metal Gear appeared in Ape escape 3 titled Mesal Gear. Where you played as a Ape version of Snake.