Bonus Features
Several gems hidden throughout the game will enable the player to unlock various features. For example, find the red gem to access the storyboard for Crash Twinsanity. Uncover the red gem during the initial stage of the game, close to the chicken coops. Guide the chickens toward the crates and destroy with an explosion. The red gem will appear atop a nearby rock.
You need the clear gem to view a hidden video. Find this gem by using the worms to take you to a sled on the beach. Travel on the sled to another island, where you̵7;ll discover the clear gem hidden on a statue.
The yellow gem allows players to have access to the game̵7;s unseen gallery. You can't attain this gem until you reach part three of Nsanity Isle. Leap onto the crates that are floating in midair and set off the dynamite. The yellow gem will be uncovered on the ground.
The green gem opens the enemy gallery. Go to the second part of Nsanity Isle and detonate the explosives near a haystack. The resulting explosion will cause some crates to descend. Climb them to discover the green gem.
The purple gem will unlock Crash Twinsanity̵7;s concept art. This gem is also hidden in part two of Nsanity Isle. Group the chickens into some boxes and destroy them with some TNT. This will cause another set of crates to descend. Jump on top of the lowered crates to find the gem.
The blue gem will provide access to the boss gallery. Find the cannon that is located on the beach and fire it at the statues. Aim for the statues̵7; mouths. This will cause them to fall. The blue gem will appear after you̵7;ve toppled the last statue.
Hidden Animation
You will find a hidden animation if you defeat Crash Twinsanity at 100 percent. In order to accomplish this, you must not only beat the game, but find all of the gems listed above.
Funny Video
Finally, Crash Twinsanity features a hidden, funny video that is only accessible if you have found all of the gems and beat the game. You will be able to view the video by making your way to the Iceberg Lab and clicking ̶0;Start.̶1; The funny video will then appear on the Extras menu.