* Based on the Heidi novels by Johanna Spyri.

Five years after the TV series, a theatrical version was screened in film theatres, which included a different voice cast for some characters.

Later, two OVAs, Alps no Shoujo Heidi: Alm no Yama Hen and Alps no Shoujo Heidi: Heidi to Clara Hen were released, which offered a differently cut longer summary of the TV series and replaced the changed voice actors with the ones from the series.

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Full story: Alps no Shoujo Heidi
Alternative version: Alps no Shoujo Heidi: Alm no Yama Hen
Alternative version: Alps no Shoujo Heidi: Heidi to Clara Hen