Business
Merchandising Revenue
Turning pixels into plushies, t-shirts, and everything your shelf can hold.
Mechanics
Coyote Time
A hidden grace period that lets you jump for a few frames after walking off a ledge, like Wile E. Coyote running on air.
Genres
Strand-Type Games
A genre Kojima invented (or claimed to) where the point isn't fighting enemies but building connections, literally.
Psychology
Gambler's Fallacy
You have lost the 50/50 five times in a row, so you are 'due' for a win -- no, you are not, that is not how probability works.
Graphics
Texture Streaming
Loading texture data on-demand as you move through a game world instead of cramming everything into memory at once.
Based on infomaxxxing codebase