A little boy whose dreams transcend reality is sucked into his own fantasy, which is everything he has dreamed of, until he unleashes an old secret that may not only destroy this perfect dream world but reality itself.
Unfortunately the movie Little Nemo: Adventures in Slumberland is not yet available on HBO Max.
| Directing | William T. Hurtz | Director |
| Writing | Ray Bradbury | Writer |
| Writing | Winsor McCay | Writer |
| Directing | Masami Hata | Director |
| Visual Effects | Yoshitake Iwakami | Animation |
| Writing | Chris Columbus | Screenplay |
| Editing | Takeshi Seyama | Editor |
| Writing | Yutaka Fujioka | Story |
| Writing | Jean Giraud | Story |
| Sound | Richard M. Sherman | Songs |
| Sound | Robert B. Sherman | Songs |
| Art | Toshio Nozaki | Background Designer |
| Production | Yutaka Fujioka | Producer |
| Visual Effects | Kazuhide Tomonaga | Animation Director |
| Visual Effects | Nobuo Tomizawa | Animation Director |
| Art | Jean Giraud | Conceptual Design |
| Production | Shunzo Kato | Co-Producer |
| Production | Koji Takeuchi | Associate Producer |
| Sound | Kunio Ando | Sound Mixer |
| Sound | Shizuo Kurahashi | Sound Effects Editor |
| Visual Effects | Hiroyuki Aoyama | Key Animation |
| Visual Effects | Hiroaki Noguchi | Key Animation |
| Visual Effects | Yuichiro Yano | Key Animation |
| Visual Effects | Atsuko Tanaka | Key Animation |
| Visual Effects | Osamu Okubo | Key Animation |
| Visual Effects | Keiko Tomizawa | Key Animation |
| Visual Effects | Fumio Iida | Key Animation |
| Visual Effects | Kuniyuki Ishii | Key Animation |
| Visual Effects | Jouji Yanase | Key Animation |
| Visual Effects | Noboru Takano | Key Animation |
| Visual Effects | Kazuyoshi Takeuchi | Key Animation |
| Visual Effects | Hiroyuki Horiuchi | Key Animation |
| Visual Effects | Hiroshi Shimizu | Key Animation |
| Visual Effects | Osamu Nabeshima | Key Animation |
| Visual Effects | Toshitsugu Saida | Key Animation |
| Visual Effects | Sadahiko Sakamaki | Key Animation |
| Art | Nizou Yamamoto | Art Direction |
| Camera | Hajime Hasegawa | Director of Photography |
| Production | Sander Schwartz | Executive In Charge Of Production |
| Sound | Vic Radulich | ADR Recording Engineer |
| Sound | Catt LeBaigue | ADR Recording Engineer |
| Sound | Roy Prendergast | Music Editor |
| Sound | Masafumi Mima | Sound Editor |
| Sound | Mikio Mori | Dolby Consultant |
| Visual Effects | Hiroko Kondo | Color Designer |
| Writing | Richard Outten | Screenplay |
| Directing | Masanori Hata | Director |
| Sound | Thomas Chase | Original Music Composer |
| Sound | Steve Rucker | Original Music Composer |