The dialogue in Paper Mario RPG is written in relatively simple Japanese, often using hiragana and katakana for Mario’s grunts, but standard kanji for partners. For students of the language (JLPT N4 to N3), this game is a goldmine of practical, conversational Japanese mixed with fantasy slang.

The original GameCube disc (ISO) carries specific technical markers that enthusiasts use for emulation on platforms like the Dolphin Emulator .

While the game isn't fully voiced, the battle shouts ("Let's do this!" vs. Japanese equivalents) are different. Fans of the Super Mario anime aesthetic often prefer the original Japanese battle yells.

Some item and NPC positions differ; for example, the "Wedding Ring" quest item is found on top of an archway in the Japanese version but was moved to a set of crates for international releases.