You should see various "Bonus Packs." Ensure you download the Character Pack and Pre-order DLC (which is now free for everyone).
On the RPCS3 emulator, users typically install the base game followed by a DLC PKG file and an update PKG (e.g., version 1.03) to fully unlock the roster. tekken tag tournament 2 ps3 dlc pkg download link
The game's graphics and sound design are also top-notch, with detailed character models and stages that showcase the PS3's capabilities. You should see various "Bonus Packs
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