These saves typically include all 30+ characters, all hidden costumes, and sometimes maxed-out Tekken Bowl records.
A 100% completion save file for Tekken Tag Tournament typically provides: The Full Roster : Instant access to all unlockable characters, including , and the infamous Bonus Modes : Unlocking the addictive Tekken Bowl mode, which became a staple of the series' side-content. Gallery and Theater
Whether you use Free McBoot on original hardware or PCSX2 on a PC, a complete save file is small (under 200 KB) but delivers massive value.