Yu-Gi-Oh! 5D's Tag Force 4

Yu-Gi-Oh! 5D's Tag Force 4 (遊☆戯☆王: 5D's タッグフォース4) is a card battle game for the Playstation Portable. It is the fourth installment of the Yu-Gi-Oh! Tag Force series, and the first to be based on the Yu-Gi-Oh! 5D's series (previous installments were based on Yu-Gi-Oh! GX.) It is based on the Dark Signers arc of the anime series. The promotional cards are Warm Worm, Worm Bait, Regret Reborn and Shield Worm. Like previous installments, the English version does not feature any voices and the life point counter is altered.

Unlockable
o UMD Recognition with Tag Force 1 unlocks The Winged Dragon of Ra (Effect Monster), Philosopher's Stone - Sabatiel, Crystal Skull, Jinzo (Anniversary Edition) and Red-Eyes Black Dragon (Anniversary Edition) for use and an alternative personality for Mina Simington as an opponent.
o UMD Recognition with Tag Force 2 unlocks Slifer the Sky Dragon (Effect Monster), Power Wall, Dark Magician (Anniversary Edition), Dark Magician Girl and Ashoka Pillar for use and Akiza Izinski (Duel Academy Version) as an opponent.
o UMD Recognition with Tag Force 3 unlocks Obelisk the Tormentor (Effect Monster) (Anniversary Edition), Blue-Eyes White Dragon (Anniversary Edition), Berserker Soul, Miracle Contact, and Cabrera Stone for use and Kalin Kessler (Team Satisfaction Version) as an opponent.
+ In the North American release, Tag Force 1 also unlocks the Tag Force 3 unlockables, since that game was never released in North America.
o UMD Recognition with all previous Tag Force games unlocks Triangle - O for use.

High Noon Constellation

At the card shop, press the right directional button 5 times, then the square button 7 times, and lastly press select 3 times. (Right 5x, Square 7x, Select 3x)

Booster Pack Discount

Give one Dark Magician Girl, Ebon Magician Curran, White Magician Pikeru, Card Ejector and Cyber Tutu figures to the Shop Owner to gain 10% Discount(max 50%).

How to Unlock the Characters

Unlockable -How to Unlock
Dark Signer Carly -Beat Jack's Story
Dark Signer Kalin -Beat Yusei's Story
Dark Singer Misty Tredwell -Finish Akiza's Story
Devack -Finish Luna's story
Mimicry -Beat All 1st Page Stories(Yusei, Jack, Akiza....)

UMD recognition unlockable characters

Unlockable -How to Unlock
Aki Izayoi (Duel Academia variant) -UMD recognition with Tag Force 2
Kalin Kessler (Enforcer variant) -UMD recognition with Tag Force 3
Mina Simmington ("more serious-looking" variant) -UMD recognition with Tag Force 1