Starfinder is a complete roleplaying game, and can be played on its own without ever referring to the Pathfinder Roleplaying Game. It is based on Pathfinder, of course, and shares many similarities with its older cousin, but in many cases Starfinder handles specific issues differently than Pathfinder. We've mentioned several times that Pathfinder is easily integrated into Starfinder, and that there's some level of compatibility between the two games, but we haven't been very specific on exactly how easy it'll be to add Starfinder cybernetics to Pathfinder fire giants, or port Pathfinder character classes and races into a Starfinder campaign. Those questions are likely to take more than one blog post to cover, but we wanted to at least begin going into greater detail about how we envision these two games working together. Starfinder should feel very familiar to experienced Pathfinder players, and much of the overall play experience is similar. Despite changes like iterative attacks for high base attack bonuses being replaced by universal full attacks allowing two attacks both at -4, or breaking hit points into two pools of Stamina Points and Hit Points, most of the general rules of the game are close enough to make it easy to see how to convert a specific option from one class to another. The most common specific tweaks to combat are covered in the Starfinder Core Rulebook, specifically Chapter 13: Pathfinder Legacy.

Page 1 of 1