主要论据来源于英文wiki，其中给出部分原文

1 rpg 起源于 欧美d&d，日本最早的 rpg只是游戏系统和模型的抄袭，通俗的讲就是山寨货，前后相差了10多年。从文化的发明和创新上看，日本rpg属于低智商和低技术的应用

2 文化方面具体分析
Western RPGs/西方rpg

Platform/应用平台

Western RPGs (WRPGs) are usually released first on Western personal computer platforms, and only in recent times has it become common to port them to consoles. For this reason, they are often referred to as "Computer RPGs".
西方RPG游戏建立于个人电脑平台，在智商和技术应用上明显高于日本的游戏机平台，早期的个人电脑和任天堂游戏机地位差距最为明显

Story elements/剧情元素

The Western family of digital RPGs frequently employs dark and serious fantasy or Science Fiction settings, and open-ended, nonlinear plot structures.[1][2] The personalities of the characters are usually more subdued than those of their Japanese counterparts, with fewer cackling villains and comic relief characters. Stories often deal with ancient struggles for power that rarely end with a total victory for any given faction. The races featured in most Western RPGs are often based on those popularised by the writings of British novelist J. R. R. Tolkien, such as dwarves, orcs, and elves. In a game like Baldur's Gate, it is possible to orient the main character along varying degrees of "good" and "evil".

Western RPGs are often based more on consequential choices than their Eastern RPG counterparts, and there is often ambiguity seen in the motivations and intentions of characters, rather than the polar opposites of good and evil. This moral ambiguity can sometimes be extended to the player, allowing for multiple branches of dialogue and story paths; Star Wars: Knights of the Old Republic and its sequel The Sith Lords, for example, allow the player to pursue good, evil, or neutral pathways, each significantly impacting the game's storyline, the abilities the player has access to, and how NPCs treat the player.
西方在奇幻和科幻设定上显然比日本有实力和基础，日本人知道这些概念至少是明治维新后了
在故事设定上，西方rpg是开放的，非线性结构，注重逻辑，选择，动机和意图，而不是非善即恶的日系判断。在行为，思考方式和心理学上对智商和情商比日系有更高要求

Game mechanics/游戏工程学

Many WRPG mechanics are based directly on the rules and settings of pen and paper game systems (Dungeons and Dragons being the most common), often showing die rolls and other game mechanics normally hidden from players' eyes. Level advancement systems in Western RPGs also tend to feature lower level limits and slower progression rates than in Eastern RPGs. Many western games also incorporate skill-based character progression on top of a level-based system. Within a skill-based progression system, players invest experience or some other progression points into specific skills and abilities in order to specialize their characters for a particular style of play. Other skill-based systems will instead make the character level dependent on skill usage, as seen in The Elder Scrolls series.
西方rpg大都基于特定的规则和设定，例如d&d；而游戏本质是隐于游戏规则下的统计和数学模型。西方rpg 的核心概念例如等级，经验，技能和职业等等，全部是起源于d&d，并且作为全世界的rpg判断标准，日本rpg基本无一例外。从游戏工程学上再次证明，日本rpg是低智商和技术的山寨货

Eastern RPGs/东方（日系）rpg
Screenshot of Lunar: Silver Star Story Complete, a typical Eastern RPG.

[edit] Platform

Because video game consoles are most prevalent in East Asia, most East Asian RPGs (also called Eastern RPGs, Japanese RPGs, or JRPGs, after their place of origin), are made for consoles. Thus, they are often referred to as "Console RPGs."[1]
游戏机平台，日本最早的游戏机就是山寨货，历史上算是游戏机的第3代

[edit] Story elements/剧情元素

The themes of Eastern RPGs vary, with some games bright and colorful in appearance, such as the Lunar and Grandia series; others with dark themes and settings, such as those in the Megami Tensei series; while others have a combination of both, such as Final Fantasy VI, Final Fantasy VII, Chrono Cross, Sudeki, Eternal Sonata, ... Console RPGs often employ settings that are a fusion of Asian history, literature and folklore with European folklore and literature, and modern Japanese comics (manga) and animation (anime). Fantasy and science fiction hybrid settings are very common in Eastern RPGs, including the popular Final Fantasy series; while others such as Dragon Quest are mostly fantasy. The character designs in these games are usually in the anime style and occasionally may carry light-hearted tones. The storylines in JRPGs usually involve an epic, ultimate battle between the forces of good and evil, with the player's characters fighting for the good cause. Character races tend to be limited to humans; when the player is given a choice, Eastern RPGs tend to use races specific to the game's setting.

An Eastern RPG's plot is usually crafted in an intricate fashion into a highly dramatic, strictly directed and linear construct, relying on the viewer to experience most of its twists and turns at predetermined specific times in certain ways.[1] In this sense, an Eastern RPG's execution is quite akin to that of a movie or a novel, with gameplay frequently interrupted by scripted cut scenes. Few games in the genre offer branching plots, though some titles such as Shin Megami Tensei and Tales of Symphonia do feature alternate storylines depending on the player's conversational choices to characters in the party. Chrono Trigger, Chrono Cross and the Star Ocean series were notable for offering a multitude of decidedly different endings during a period when very few console RPGs offered multiple endings.

A slight variation of this family exists in mainland China, Taiwan, South Korea, and other neighboring countries. These games use a different, Chinese-influenced art style and the storyline is told with a Wuxia style inspired by novels. One famous example is Sword of Xuan Yuan.
注重画面，日本文化向来注重包装。最早的画面党可是日本人，哈哈~
日系游戏主要以人类和东方元素为主，强调夸张地戏剧性，通俗点将就是脱离“现实逻辑”（注意是逻辑）和装B
注重电影化的表现手法
连武侠文化和轩辕剑也提到了？呵呵...

[edit] Game mechanics/游戏工程学

Eastern developers tend to create new (but similar) systems for every new game rather than implementing existing role-playing game systems. For example, every new Final Fantasy game always features a different battle system from previous games in the series. Character development rules are also often oriented towards combat abilities.[2]
日系游戏在工程学上的唯一特点（勉强算是特点），就是总有新的（换汤不换药）系统（这点老外看的很透彻），比如最终幻想系列；但最后能趋向同样的结果，比如踩地雷，物理攻击和魔法/特技攻击
其实优点还是包装，换着花样的包装...