You can actually watch Chibi Godzilla in any order. But here's a guide if you want to watch it by release order.
Ganbare Chibi Godzilla > Chibi Godzilla > Tadaima! Chibi Godzilla > Chibi Godzilla no Gyakushuu
Chibi Godzilla Watch Order:
(3 TV Series, 4 ONAs)
1. Ganbare Chibi Godzilla (Oct 23, 2018) | ONA | 1 episode × 1 min. - Other
2. Chibi Godzilla (Dec 12, 2018 to Apr 27, 2023) | ONA | 5 episodes × 40 sec. per ep. - Other
3. Tadaima! Chibi Godzilla (Jul 15, 2020 to Sep 30, 2020) | ONA | 12 episodes × 30 sec. - Other/Prequel
4. Tadaima! Chibi Godzilla Season 2 (Dec 2, 2020 to Feb 24, 2021) | ONA | 13 episodes × 30 sec. per ep. - Sequel
5. Chibi Godzilla no Gyakushuu (Apr 1, 2023 to Jun 24, 2023) | TV | 13 episodes × 2 min. - Other
6. Chibi Godzilla no Gyakushuu 2nd Season (Apr 3, 2024 to Mar 26, 2025) | TV | 52 episodes x 2 min. per ep. - Sequel
7. Chibi Godzilla no Gyakushuu 3rd Season (Jul 2, 2025 to ?) | TV | ? episodes x 2 min. per ep.
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Genres: Fantasy, Slice of Life
Demographic: Kids
Tags: Chibi, Superdeformed, SD, Godzilla, Kaiju, Kaijuu, Monster, Kawaii, Kodomo, Franchise
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Godzilla https://myanimelist.net/character/26845/Godzilla
Chibi Godzilla https://myanimelist.net/character/187244/Chibi_Godzilla
Official Site: https://godzilla.store/chibigodzilla/
Twitter (X): ちびゴジラ【公式】 (Chibi Godzilla [Official]) @chibigodzi https://twitter.com/chibigodzi
Wikipedia: https://en.wikipedia.org/wiki/Godzilla
https://en.wikipedia.org/wiki/Godzilla_(franchise)
https://en.wikipedia.org/wiki/Chibi_Godzilla_Raids_Again
Check out this stack for more kaiju anime:
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For more on kaiju, check this Wiki: https://en.wikipedia.org/wiki/Kaiju
🦖Clubs:
GODZILLA https://myanimelist.net/clubs.php?cid=4128 (Inactive)
Kaiju/Giant Monster Club!! https://myanimelist.net/clubs.php?cid=16519 (Inactive)
✔️。
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