If you liked
Houseki no Kuni
|
...then you might like
Hataraku Saibou
|
Both are set in a world that feels very alien to the viewer, lives by strict rules and is under constant attack of alien entities (lunarians in Houseki no Kuni and bacteria in Hataraku Saibou). Both have a large cast of human-like, but not actually human characters, with different episodes focusing on different ones, and protagonists (Phos in Houseki no Kuni and Red Blood Cell in Hataraku Saibou) who are pretty incompetent and strive to become better at their job.
If you liked
Yojouhan Shinwa Taikei
|
...then you might like
Yoru wa Mijikashi Arukeyo Otome
|
They are based on two books by the same author, have the same director, same art style, and some shared characters. The atmosphere and a general "feel" of those two works are very similar, so one is probably the closest you could find to the other.
If you liked
Mai-HiME
|
...then you might like
Mahou Shoujo Madoka★Magica
|
Both are about a group of girls with special abilities, both become much more dark in process, and their protagonists both have great potential and at the same time are uncertain of what they must do and what they really want to do.