Eggipus Rex

 Eggipus Rex''' is a secret level from Crash Bandicoot 3: Warped. You ride the T-Rex through the whole level, which is set in a prehistoric swamp. It might be a reference to Igor Stravinsky's opera, Oedipus Rex.'''

How to access
It can be accesed from the yellow Gem path in Dino Might!, the eleventh level. As soon as the triceratops starts chasing you, you'll have to get hit (without having an Aku-Aku) by the second pterodactyl found in the stage.

Instead of respawning with one less life, the screen will go on displaying the scene for a few seconds until Warped's signature fadeout occurs. You will then fall into the secret level.

About the level
This is a very special level for two reasons: first, it is a totally side-scrolling stage (and therefore has mostly 2D controls) with the background seen in the prehistoric bonus rounds.

Other than that, noteworthy is how this stage has absolutely not a single crate. As a consequence, Eggipus Rex will automatically award you with a clear Gem right after its completion.

So, a good strategy implies a clever usage of the stopwatch (already available due to the lack of any Crystal) in order to practice the level first, and then to gather both the Gem and the Relic.

It should be mentioned that this level is great for collecting extra lives. Simply play this level in time trial mode, because in that mode, you do not lose lives if you fall off the edge, and for some reason the Wumpa Fruit do not disappear in Time Trial mode, as well as there are so many Wumpa Fruit in the level that it is possible to get up to the maximum amount of lives (99) if you go all the way through the level, jump off of the edge at the end, and repeat. The pterodactlys can be jumped off to give you extra height when jumping. It is possible to get a platinum Relic on this level without using Baby T by using the Crash Dash power and Slide Jumping. Strangely, the sound when you collect a gem is just the same as 'Crash Bandicoot 2 : Cortex Strikes Back, and the gem routes in that games were 2D. This evidence could suggest they used the same engine from Crash Bandicoot 2: Cortex Strikes Back.