(N64) Super Mario 64

The first Mario in 3D polygon graphics was released in 1996 at Nintendo 64’s launch.
Super Mario 64 showed how a 2D gameplay could be ported in 3D and became the reference for all 3D platform games for many years to come, not only for the 3D polygon graphics but also for the dynamic camera and the 360 degrees analog control (which was introduced at the same time and it will become the standard for controllers).
A milestone in the videogame industry and probably one of the game that every collector should own.