Knights of Sidonia is a 13 episode (so far) series about space pilots in the far future who defend their generation ship from alien attacks. I really enjoyed the dark atmosphere (huge image) and the show-not-tell world-building. Sidonia, while probably not as strange as it really would be (some aspects are a bit contemporary-Japan-in-space), still feels like a different enough place to be interesting. The pure-CGI graphics worked well for me, though some people find the CGI characters a bit offputting. The action was also quite exciting at times. The only major weakness I felt is that the main character is rather bland, though by the end he's slowly improving, which brings hope for him in the upcoming sequel.

There is an English-dubbed version available on Netflix for those who have access.