When comparing Dungeons & Dragons v3.5 / Pathfinder RPG vs Dungeons & Dragons 4th Edition , the Slant community recommends Dungeons & Dragons v3.5 / Pathfinder RPG for most people. In the question“What are the best tabletop RPGs?” Dungeons & Dragons v3.5 / Pathfinder RPG is ranked 29th while Dungeons & Dragons 4th Edition is ranked 61st. The most important reason people chose Dungeons & Dragons v3.5 / Pathfinder RPG is:
The D&D v3.x family was published under an Open Game License which encouraged third-party material. Two editions later, there is still a thriving market creating new 3.5-compatible resources.
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Pros
Pro Enormous pool of source material
The D&D v3.x family was published under an Open Game License which encouraged third-party material. Two editions later, there is still a thriving market creating new 3.5-compatible resources.
Pro Actively supported via Pathfinder RPG
When Wizards of the Coast discontinued D&D v3.5 development in favor of 4th Edition, Paizo took advantage of the Open Gaming License to publish an updated revision of the 3.x rules under the title Pathfinder RPG, which is still their flagship product. Notably, Pathfinder RPG has consistently outsold 4th Edition.
Pro Modular system encourages creativity
The D&D v3.x family is designed around building characters, monsters, magic items, etc., from small simple pieces. For each piece, any of countless others can be substituted, allowing near-infinite customization and variety.
Pro Many easy to comprehend books and other resources
Pro Perfect balance of DM storytelling and deeply granular rules.
All of the deep-dive rulebooks provide the option for endless complexity - go as far as you want, and you'll never run out of opportunities. However, the basic mechanic of "roll a d20 and add your bonus" is simple enough that the DM can tell stories, create worlds, and build adventures with their party.
3.5e is the perfect edition.
Pro Concise and consistent rules
Compared to prior editions, 4th Edition D&D has dramatically simplified rules. There are very few special cases to remember, and all character classes (Fighter, Wizard, etc.) share a common pattern in how they gain and use combat abilities.
Pro Excellent tactical combat system
As a grid-based combat game, 4th Edition offers well-balanced and tactically rich gameplay. In particular, it features numerous effects which force or prevent movement, often preventing simple "charge and attack" tactics.
Pro Focus on heroism and fun
4th Edition downplayed simulation, and instead embraced cinematic action. The players are assumed to be the main characters of a story which revolves around them, rather than merely one faction in a far larger world.
Pro Best balanced version of D&D
Other versions of D&D tend to use a "balance over time" system, where some character types are weaker to start with and stronger later on, and vice-versa for others. However, this works poorly if your game doesn't continue for a long time, or starts with PCs already at a higher level. 4th Edition is the first - and so far only - version of D&D to do a good job of making characters similarly powerful at all levels.
Pro Character death is uncommon
To encourage boldness, characters are far harder to kill than in any other edition. This also allows players to invest heavily in the story and personality of their characters without facing the potential buzzkill of loss.
Pro A unique D&D experience
Not weighed down by sacred cows, and arbitrary rules for the sake of nostalgia and identity.
Cons
Con Encourages character optimization outside of play
With so many options available to the player, and the almost unlimited ability to combine them, certain "character builds" are patently superior to others. Players who spend a lot of personal time poring over the rules can often create characters so powerful that players who don't optimize feel useless in games with those who do.
Con Casters are significantly more powerful than non-casters
Con Detailed simulation slows down gameplay
Due to countless situational modifiers, players and DM alike have to put a great deal of thought into decisions about position, order of actions, etc., to the point that six seconds (one combat round) of "in-game time" frequently takes half an hour or more of play time.
Con Very easy to build broken (overpowered / underpowered) characters
Con Too much focus on combat, not enough on roleplay
Con Ovely complicated
Con Not enough customization
Multiclassing has been reduced to the point where it is rarely useful past the first feat & limited to one extra class.
Con Combat drags
Due to the scaling of player damage vs. monster hit points, even simple fights can take a long time to resolve, particularly at higher levels.
Con Suspension of disbelief is often difficult
Making it fun was such a priority in 4th Edition that it frequently trumped making sense. This manifests in ways ranging from "minions" who die in hordes at the lightest touch, to broken weapons simply repairing themselves.
Con Grid combat is required for best combat experience
Though most other editions of D&D assume miniatures are used for combat, they have all provided rules for playing without them, while 4th edition has not. It even goes as far as to measure distances and ability effects in terms of "squares.".
And while it's possible to play the game without a grid, 4th edition combat places so much emphasis on powers and abilities that move you and your opponents around the battlefield that keeping track of such movement is important enough where playing 4th Edition without minis or a similar system loses most of the interesting parts of the combat system.
Con Equipment is mandatory to be efficient
Con It's the easy mode of D&D
Everyone has spells and unlimited HP.