- Christmas Rushed: The game got this treatment, but for good reason. After Banjo-Kazooie got delayed to summer 1998, Rare had to have some triple-A game to put out around the Christmas 1997 season, and the game they had at that point (which was miles away from the game you're reading an article about now) was revised extensively and ultimately published around mid-to-late November. According to general consensus, the rushed state of the game did very little to hinder the actual playing experience.
- Executive Meddling: The addition of Diddy Kong was apparently suggested by Shigeru Miyamoto during the game's early development. The team didn't like the idea at first, but have since stated that it was a good addition.
- Exiled from Continuity: Banjo and Conker for the DS remake, due to their franchises continuing on Microsoft systems. Tiptup is left intact though, likely because his presence in the Banjo series is minor enough that they didn't really care.
- Follow the Leader: As a Kart Racer, this game follows Mario Kart, right down to having eight racers per race and pickups on the track. Unlike Mario Kart 64, which excluded the secondary pickup that increased top speed (coins) in the jump to 3D, Diddy Kong Racing has bananas that can be collected during a race and serve a similar purpose.
- Keep Circulating the Tapes: As the sole Rare game with both Nintendo-owned and Microsoft-owned characters in it, the Nintendo 64 version of the game hasn't seen a digital re-release by either company. While the DS remake exists, it also has no digital version on the Wii U.
- No Export for You: The DS version wasn't translated into Japanese.
- What Could Have Been:
- The N64 version features the original, kid friendly, and much younger Conker.
- The game started in development as RC Pro-Am 64 and was planned to have the regular characters aside from Diddy Kong and Conker.
- There was supposed to be a GameCube sequel to Diddy Kong Racing called Donkey Kong Racing, which judging by the only remnants of its existence-an E3 2001 trailer- it would had taken place in the Donkey Kong series with Donkey Kong characters riding various animals as vehicles. If the original game's Sequel Hook ending is to be taken into consideration, Wizpig may had also returned. However, the game was canned due to Rare being bought out by Microsoft, and presumably as a result of the buyout, the To Be Continued card is removed in the remake.
- Pipsy was retooled from a scrapped concept called Astro Mouse.
- Remnants of several unused tracks have been found in the game's code. What they would have been used for is unknown, since all that remains of them is their general layout.
- There are a few unused songs in the game, too. One of them is a fully cut song intended for Crescent Island — it's track 12 in the Sound Test. The other is an unused channel for the character select theme, using the sitar instrument associated with Taj. Since the character select theme is a Variable Mix that changes for each racer, it's possible that Taj was intended to be playable in the N64 version at some point, like he is in the Nintendo DS remake.
- Some Dummied Out voice clips in the DS version suggest that it might have had Yoshi as an unlockable character at one point.
Trivia / Diddy Kong Racing