Pokémon "It's New Year's Eve! Pocket Monsters Encore" (lost unaired special of anime series; 1997)
"Oomisoka da yo! Poketto Monsutaa" (It's New Year's Eve! Pocket Monsters Encore) is an hour-long New Year's special for the popular anime series Pokémon that was set to air on December 31, 1997, between episodes 39 and 40. It likely would have been a simple recap of all of the show's most notable events up to that point, but was ultimately cancelled due to the fallout of the infamous "Pokémon seizure incident" that occurred earlier that month due to "Computer Warrior Porygon". It also likely used footage from the said episode.
While the episode was never aired, another two-hour New Year's special, "It's the New Year! Pocket Monsters Special", aired two years later and may have used material originally created for the 1997 special. Other than that, no footage of the special has surfaced.
This episode shares the reputation of being one of four Pokémon episodes to have never been released, the other three being "Battle of the Quaking Island! Barboach VS Whiscash!!" and "Rocket-dan VS Plasma-dan!" two-part episode.
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- Pokémon "Battle of the Quaking Island! Barboach VS Whiscash!!" (partially found unaired anime episode; 2004)
- Pokémon "Computer Warrior Porygon" (lost unaired English dub of anime episode; existence unconfirmed; 1998)
- Pokémon "The Legend of Dratini" (non-existent unaired English dub of anime episode; 1997)
- Pokémon "Rocket-dan VS Plasma-dan!" (partially found unaired two-part anime episode; 2011)
- Pokémon "Pokémon! I Choose You!" (found original Japanese airing of anime series pilot; 1997)
- Pocket Monsters Best Wishes: Hikatokage no Tenkyuugi (partially found short of "Pokémon" anime; 2011)
- Pocket Monsters Diamond & Pearl: Atsumare! Pokémon-boshi Matsuri (lost short of "Pokémon" anime; 2008)
- Pocket Monsters XY: Uchū no Hahen (partially found short of "Pokémon" anime; 2014)
- Pokémon 3D Adventure: Mew o Sagase! (partially found 3D short of anime; 2005)
- Pokémon 4D: Pikachu's Ocean Adventure (partially found 4D short of anime; 2006)
- Pokémon "Pocket Monsters, Fall Special!" (found "clip show" episode of anime series; 1997)
- Pokémon "Pocket Monsters, Winter Special!" (lost unaired "clip show" episode of anime series; 1998)
- Pokémon 3: The Movie (lost first draft of anime sequel film script; late 1990s)
- Pokémon Live! (partially found professional recording footage of musical; 2000-2001)
- The Power of One: The Pokémon 2000 Movie Special (found The WB special; 2000)