Total Recommendations: 3
If you liked
Koukaku Kidoutai: Stand Alone Complex - Solid State Society
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...then you might like
Vexille: 2077 Nihon Sakoku
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Similar cyberpunk settings and concepts. Ghost in the Shell tends to be more philosophical while Vexille is more action oriented.
If you liked
Kaze no Tani no Nausicaä
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...then you might like
Heisei Tanuki Gassen Ponpoko
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Nausicca has a similar environmentalism themes, but much, much less heavy handed than Pom Poko. Done by the same studio as well.
If you liked
Koukaku Kidoutai
|
...then you might like
Appleseed Saga Ex Machina
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Similar setting (cyberpunk future, cybernetically enhanced law enforcement officers, etc) however GitS is less action oriented and much more philosophical than ASEM.