Completely Different Title: The series is called Atsumare! Piñata in Japan, with "atsumare" meaning "gather".
Descended Creator: Leafos is voiced by Louise O'Connor (credited under her maiden name Ridgeway), a Rare employee.
Development Gag: Miss Petula has a goldfish piñata in her hat, which was originally going to be obtainable, but had to be cut because the developers couldn't figure out how fully-aquatic piñatas would work.
Kids' Meal Toy: Burger King released some for, of all Viva Piñata games, Party Animals.
Role Reprise: Both games have Mike Pollock and J. David Brimmer reprising Langston Lickatoad and Professor Pester from the animated series, while the first game has Dan Green reprise Hudson for the opening video that plays when a player starts their first garden.
The game was originally planned for the Pocket PC but it never happened.
Rare figured out how to connectTrouble in Paradise with Pocket Paradise despite them being on consoles made by different companies, but they had to scrap it because it was too late in their development cycles.
The Parmadillo in Trouble in Paradise has a scrapped appear cutscene, implying that it was originally meant to be a visiting species rather than an evolution.
Working Title: According to a Rare Revealed video, the game was originally just called Piñata until they realised it was too generic to trademark. Other title ideas included Piñata Paradise, Loco Piñata, Lots o' Piñata, and Whole Lotta Piñata.
Only So Many Canadian Actors: Downplayed, while this is the only YTV original series not to use the Canadian version of this trope. It still applies as the cast is, of course, the usual New York anime dubbing pool. Itself a rather egregious example.
A 3rd season was planned, but was cancelled because 4Kids went bankrupt. Not much is known about the cancelled season other than Leafos would've been a main character, giving the Piñatas a human ally. Fergy, Langston and Les would've received Love Interests, who were to be named Felicia Fudgehog, Lois Lickatoad, and Gracie Galagoogoo respectively.
This was merely the start of the collaboration between Rare and 4kids, with hopes of creating more shows and merchandise based on their other IPs, including Banjo-Kazooie, Jet Force Gemini, and Perfect Dark. 4kids' bankruptcy put a stop to all this.