Crash Bandicoot 2: Cortex Strikes Back - Easter Eggs

10 extra lives: On the second Warp Room, jump on the small polar bear repeatedly and you'll eventually get 10 extra lives.

Replay boss fights: Position yourself in the Warp Room before the boss fight you want to replay. Take the lift up while holding down the Triangle button and you'll be taken to that fight again.

Annoy Cortex: Start a new game and go to any level, then return to the Warp Room from the pause menu. Cortex will get annoyed at you for not retrieving the crystal. You can do this 3 times for different comments. This will only work if you haven't gotten any crystals yet. You can also trigger this by finishing the level without the crystal or by getting a Game Over.