Overview
Pathfinder 2nd Edition is a tactical,
crunchy and highly customizable heroic fantasy roleplaying game system published by Paizo. Originally released in 2019 as the evolution of the
Pathfinder 
https://groupfinder.eu/library/pathfinder-2009 system (which grew out of the
D&D 3.5
system, as a reaction to the release of the simplified and more video game-like
D&D 4E https://groupfinder.eu/library/dungeons-dragons-4e-2008 ).
The system recently received a comprehensive "Remaster" overhaul, which decoupled the game from the legacy Open Game License (OGL), moving it to the system-agnostic ORC License. The Remaster version has updated various terminology and streamlined different conflicting mechanics, the core engine of PF2E remains exactly the same as before.
Description
Like other d20-based fantasy games, players are an adventuring party that go on adventures, defeat enemies and uncover various mysteries while the Game Master (GM) is in charge of running the world around the characters and is in control of managing any enemies and non-player characters they might encounter. However, where
D&D 5E https://groupfinder.eu/library/dungeons-dragons-55e-2024 leans heavily on "rulings over rules" and simplicity, Pathfinder 2E has shifted its focus on customization and making sure that with every system balance is maintained.
Pathfinder 2E is ideal for players who are more into tactical combat, clear rules for exploration, and the ability to build unique character concepts with a reasonable amount of customization without accidentally breaking the game or worry too much about maintaining balance. The system comes with great tools for the GMs as the system provides clear guidelines and mechanics for most situations, meaning the GM rarely has to invent or interpret rules on the fly to keep the game moving.
System Overview & Key Features
The 3-Action Economy
Pathfinder 2E is famous for their action system. Instead of pre-defined action types, the player can perform creatively distribute their actions how they see fit. Instead of always having a "move action" that the character can utilize or leave unused, the system allows a character to instead use that action as an extra attack. Or instead of attacking, the adventurer can move twice (or thrice, if using all actions).
Degrees of Success
Instead of approaching "1" or "20" on the d20 die as a critical result, The system considers "oversucceeding" as a critical success. Succeeding a roll by 10 or more points it is automatically a Critical Success. If you miss the DC by 10 or more, it is a Critical Failure. Because of this, every single +1 or -1 improvement feels more impactful and important.
Feat-Based Character Customization
There are no "useless level-ups" Every single level-up players make meaningful choices by selecting from an extensive assortment of Ancestry Feats, Class Feats, Skill Feats, and General Feats. This creates a situation, where even two characters of the same class can be played completely differently.
Reliable Encounter Building
The game's underlying math is rigorous and highly functional. An encounter mathematically classified as "Severe" will actually push the party to their limits. GMs can trust the system's encounter building rules completely.
Keyword and Trait System
Spells, weapons, and abilities have specific traits (like "Incapacitation" or "Fire"). If a rule has a trait, it consistently interacts with the rest of the game's mechanics in the exact same way, removing ambiguity.
Edicts and Anathema
PF2e has abandoned the traditional moral alignment system. Deities and classes are governed by Edicts (things your character must strive to do) and Anathema (things you must avoid), creating a more nuanced approach to roleplaying.
Additional links
paizo.com/pathfinder https://paizo.com/pathfinder - Official Pathfinder website
2e.aonprd.com https://2e.aonprd.com - Archives of Nethys (Official free rules database for PF2e)