Recreations of Doom, Wolfenstein 3D and Quake levels can all be found hidden inside the game.
The player must first interact with a series of switches and doors dotted throughout early game areas, which then open up portals to each Easter Egg.
As well as original visuals and sound effects, each location features a collectable item to take away.
At gamescom 2011, creative director Tom Willits told Digital Spy that RAGE was faithful to id Software's back catalogue.
RAGE was released on Xbox 360, PlayStation 3 and PC earlier this week in North America, and will be available tomorrow (October 7) in the UK.
> Read our review of RAGE
Watch the Wolfenstein 3D Easter Egg in RAGE below (contains strong language):
Watch the Doom Easter Egg in RAGE below:
Watch the Quake Easter Egg in RAGE below: