My list of all the TV shows worth watching
Started from a comic/manga
Traditional & western anime
Originated from gaming series
Extraterrestrial, or Alien Sci-Fi is a form of Science Fiction focused around alien life. Whilst alien life is a relatively common aspect across science fiction, Extraterrestrial Sci-Fi instead focuses on it as a primary. Investigating the social and philosophical consequences of alien life on humanity.
There are a number of major themes alongside this broad style of sci-fi. There are "First Contact" settings where humanity discovers, or is discovered by an intelligent alien species for the first time. There are "Alien Invasion" settings where humanity is invaded and often genocided by an often technologically superior alien force (this one can bleed into Apocalyptic settings). There are "Alien Investigator" settings too where a Ufologist, or a team of Ufologist-types investigate potential alien activity, or are somehow connected up into a conspiracy where Alien life is concealed from the public. There is also the lesser "Xenofiction" setting, where the narrative takes place from an alien perspective.
Colony Sci-Fi (or New Frontiers) is Science Fiction built around the establishment of community settlements, usually on a new planet (although it may happen in a space context). It will usually involve significant survival elements against an unknown ecosystem, and unknown animals and possibly include first contact with alien life. It may also involve competing settlements, or be a settlement of survivors from a conflict.
Series apocalyptique
by Raynald76