To give you the most useful information, could you clarify which of these you are looking for?
: Technical commands used in the PC versions (like the Master Chief Collection or the original Halo Custom Edition ) to enable god mode or spawn items. Cheats Codes For Halo
The phrase could refer to a few different things, depending on which game in the series you're playing or what you're trying to achieve. To give you the most useful information, could
: These are hidden in-game collectibles (like Grunt Birthday Party or IWHBYD ) that act as toggleable "cheats" to change gameplay or add humor. Cheats Codes For Halo
: Classic hidden secrets or exploits, such as the Energy Sword fly or reaching out-of-bounds areas.