Wish Keys, originally referred to as keys or Gold Keys, are a set of four keys that appear in Diddy Kong Racing and Diddy Kong Racing DS. Each Wish Key is hidden in a racetrack of all four worlds and unlocks the Challenge Level door of its respective world. After each key is retrieved, the character can choose to either win or quit the race.
All four keys are large golden keys in the original version. Their role was slightly changed in the DS remake, where each Wish Key unlocks a Wish Race against T.T. Each one also received their own redesign except for the one of Dragon Forest. Most of their redesigns are based on their respective world theme. The Dino Domain's key has a skull design, Snowflake Mountain's key is made of ice, and Sherbet Island's key resembles a golden anchor.
|Image||Course Found||Challenge Level||Location|
|Fire Mountain||The racer must drive off a ramp located offtrack and next to the course's first turn.|
|Snowball Valley (Snowflake Mountain)||Icicle Pyramid||The racer must drive to the left of the finish line, which leads to a hidden path. The Wish Key is in an alcove of the icicle-covered wall on the right side.|
|Crescent Island (Sherbet Island)||Darkwater Beach||The racer must take the left path at the split. Around halfway through the path, they must drive into the water and collect the Wish Key in a nearby alcove. The easiest way for it is the hovercraft.|
|Smokey Castle||The racer must race through the course and stop after crossing the drawbridge. They must hit a nearby bell, which causes the drawbridge to slowly rise. As it rises, the racer must use a speed boost power-up near the end of the drawbridge and boost onto a platform with the final Wish Key.|
- “There is one Wish Key hidden in each hub area of the island. Find the key to gain access to the locked door in each hub, then complete the challenge to gain a piece of the TT Amulet.”
- —Diddy Kong Racing DS instruction booklet, page 11