Crystal

Crystals are the recurring items that Crash collects in order to stop Cortex. Ever since their debut in Crash Bandicoot 2: Cortex Strikes Back, they have been constanly appearing in the series as items. For powerng devices and machinery or for other purposes intended.

Crash Bandicoot 2: Cortex Strikes Back
They were first discovered by Dr.Cortex after he fell into a cave (prior to his previous fight with Crash), and found the Master Crystal.Dr.N.Gin told Cortex that they also need 25 "slave crystals" in order for their newest plot to be in effect. Cortex then used Crash to collect the remaining crystals, by traveling into 5 tunnel-like caves which will lead him to the crystal he needs. In gameplay Crash must traverse through obstacles and hazards to obtain the crystal when returns succesfully, he will pull it out of his pocket and levitate over his head into the Item Hub above him. Once Crash obtained the right amount of crystals, a Boss should be awaiting him to progress to the next level.

Crash Bandicoot 3: Warped
Crash once again had to collect the crystals from Cortex and a new threat N.Tropy and Uka Uka, for they were using a new device to travel back in time and collect the crystals before Crash was even created. Aku Aku used the machine to send Crash and Coco to retrieve the crystals before Cortex and his henchmen had the chance. In gameplay Crash and Coco would follow the same procedures as it's sequel, which will lead to them engage in a Boss Battle to proceed to the next area.

Crash Bandicoot: The Wrath Of Cortex
Another quest for the crystals took place, when Uka-Uka set free an evil group of evil masks known as the Elementals for Cortex's latest expirement. Aku Aku warned Crash and Coco about this threat and said they could only be put back into their slumber with the work of 5 "Elemental Crystals". Unlike it's past series, Crash is the only one who could enter the Boss Battle.

Crash Twinsanity
The Crystal's were first founded by Cortex after he and Crash went into a brawl, and landed into a cave. They both couldn't let go of the crystal, which made them work together throughout most of the game. They did became a necessary requirement, when Cortex discovered how to travel to demiensions. In this game the Crystal's were no longer obtained through warping through levels, but from traveling to place to place.

Crash Team Racing
The Crystals were no longer an item that served prior purpose to the story mode, only as a collectable as a chance to earn a Gem in each Hub World.

Crash Bash
The Crystals were once again added as a challenge item to the menu. It is a very rare item so rare in fact, that the player would often have a hard time completing the challenges it would bring. For it would change up the enitire level from what it once was.

Crash Bandicoot Huge Adevture
The Crystals went back into the orginal origin's from were they came from. From warping to level to level, to dodging obstacles, and at the end of it all, fight a powerful Boss that would have to defeat in order to progress to the next Warp Section.

Crash Bandicoot 2: N-Tranced
A new threat has surfaced itself into Crash's World and is hypnotizing all of it's inhabitants. It's up to Crash to gather the crystals, and find out who's causing the malice. The Crystals play the same role as an item to get to the Final Boss.