 Unlike the mainstream Star Trek universe, "Star Fleet Battles" seems to consider some, but not all, of "" as a canon material source, leading to the inclusion of aliens such as the Kzinti, which had originally been created for a non-"Trek" story series.Since the first publication of the game, "Star Fleet Battles" and the "Star Trek" universe have diverged considerably as the authors of the game and those of the films and television series have ignored each other.The resulting divergent world of "Star Fleet Battles" is known as the "Star Fleet Universe".