 If you liked
Koutetsujou no Kabaneri
|
 ...then you might like
Deca-Dence
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Similar settings and stories (to an extend). The core story roots are very different, but the idea of a group of humans fighting unknown enemy creatures from a mobile fortress remains the same. They both have very good action animation, and give similar vibes at times.
Both of these anime take place in worlds where the inhabitants are faced with fighting monsters everyday in order to survive. I think that aspect makes both of shows more interesting because you never know who will die or who will live. However, both anime are more than what you may see at a surface level and unravels as the show progresses.