There's a hidden island in the game Halo 3, and you probably missed it.

Save money on video games: https://www.nexarda.com/

Game: Halo 3
Mission: Sierra 117
Difficulty: Any
Skulls: None
Players: 1-2

Discord: https://discord.gg/4tJ5JMdSrC

Music Courtesy of Karl Casey @WhiteBatAudio :
1. Glitch in Reality
2. Machina
3. Atomic Punk