>>718294084
>K2
Shinseicho was a small but unique area that was removed from K2 entirely. Everything from there like substories, shogi, and the main story were moved to Sotenbori. Because of this instead of going to the tower to solve a puzzle you chase "Santa" around Sotenbori and solve a shogi puzzle instead. They also added NPCs that complain about this in Sotenbori.
YF6 was removed in K2 and replaced with Virtual Fighter 2. 2 was the only game that had it as a minigame.
The Marietta was removed as a major minigame from K2 and replaced with Four Shine (Just a retread of the 0 hostess club). The Marietta minigame itself sucked ass but it's been in every single game since 2 and even expanded in 6 to Nakamichi.
Club Adam was removed as a major minigame from K2 and replaced with Majima Construction (It's just Clan Creator from 6 but more TD-ish).
Both of these minigames are referenced occasionally as having happened, including in 7G where Kiryu outright says he helped at Club Adam.
The pier as a location was removed from K2, it doesn't exist. This meant Amon's fight and several substories take place elsewhere.
K2's map isn't 2's, it's just 6's. Little Asia as a whole is there despite not existing yet for another several years in-universe and Pink Street is gone entirely. You also have Gindaco Highball stores in places where they shouldn't be and the Gelataria is removed.
Like K1 many of the movesets are not from 2, they're from newer games.
Amon's moveset is completely different. It's not even the same fight and K2's version is missing his unique weaponry from 2. The brothers are the same.
The coliseum is different from K2's. K2's is way better.
K2 added the Bounty missions to pad the game out, they weren't in 2.
Substories in 2 if failed permanently locked you out of Amon on that save unless you reverted.
Riichi Heights doesn't lock you out of the cat substory anymore if you annoy the bouncer in K2.
Majima Saga is new to K2 and it contradicts stuff established in 5.