But one thing these Halo warriors never found ... was love. A romantic tribute stayed secret inside the software for seven years. And even then it was found only because Halo developers flat-out told interviewers there was something still hidden. Twice. And some of those developers had found it only by accident because they'd seen it in the source code.
Team Beyond discovered that by pressing down on both thumbsticks with the system clock set to Dec. 25, you can unlock a Halo ring on the loading screen. And if you look incredibly closely as it spins, you'll see "Happy Birthday Lauren" hidden in the game's code by Adrian Perez for his wife. WARNING: Only gift your partner a message on a ring if you're already married.