One Piece: Pirate Warriors (One Piece: Kaizoku Musou in Japanese, meaning "Unparalleled Pirates"/"Peerless Pirates") is a 2012 video game from Namco Bandai, made by Koei).After adapting Mobile Suit Gundam and Fist of the North Star into Warriors games, KOEI decided to give One Piece the same treatment. The game follows the standard Warriors formula: you run around a stage beating up waves and waves of enemies while achieving objectives to unlock the main opponent. The story covers most of the manga's storyline, specifically some of the more important fights in the series (Don Krieg, Arlong, Crocodile, etc).The game was released on March 1, 2012 in Japan. Much to the surprise of the fanbase, it was announced that Europe and North America would get the game too (released on September 21, 2012 and September 25, 2012, respectively). However, the former would be able to get it retail while the latter would only be able to obtain the game by download via PlayStation Network. Additionally, the English versions would retain the Japanese language and only be in subtitles.A sequel was made, titled One Piece: Pirate Warriors 2. Unlike its predecessor, Pirate Warriors 2 has its own non-canon storyline. It also includes more characters from the series, as well as elements from after the Time Skip.
One Piece: Pirate Warriors has the following tropes:
Aborted Arc: The Kuro, Skypiea, Thriller Bark and Amazon Lily arcs are all left out of the game unfortunately.
Also Whitebeard's use of Conqueror's Haki was an Informed Ability in the manga and anime, whereas he actually uses it in this game.
Alternate Universe: Pirate Warriors 2. Ace never quite found Teach in Part 1, so as such never fought him and never went to Impel Down. So the Marineford arc never happened, Ace and Whitebeard are both still alive and Teach doesn't have Whitebeard's power (yet...).
Bait-and-Switch Boss: In an interesting twist, the Luffy vs. Usopp duel. The way the camera twists around gives the impression you'll be fighting Usopp, then the camera quickly twists to behind Usopp, and you have to fight Luffy.
Big Bad Duumvirate: Blackbeard, Eneru, and Gekko Moria form an alliance in the story mode for Pirate Warriors 2.
Brainwashed and Crazy: Anyone affected by a "Frenzy Dial" becomes an empowered Berserker that will obey whoever has the "Operational Dial". Teach ends up getting both.
Brick Joke: For Sanji's level opening, he cooks a steak before tossing it on a plate into the air to kick away an enemy. At the end of the stage, he kicks away an enemy, and catches the plate he tossed in the air earlier.
Charged Attack: Some characters, such as Luffy, can do this with certain attacks to increase the damage and/or range.
Difficult but Awesome: Robin's Dos Fleur: Grab. Inaccurate and slow, and only targets one enemy, but is almost certain to instantly kill them or severely damage them in the case of a boss.
Downloadable Content: Both games feature small DLC packs consisting of a costume and a mission. The first game's downloadable costumes are kimonos for Luffy, Zoro, Nami, Sanji, Usopp, Chopper and Robin, Nami and Ace's Strong World costumes, and Hancock's Amazon Lily outfit. The second game's DLC costumes are Luffy, Zoro and Sanji's outfits from Film Z, and costumes for Nami, Robin, Hancock and Perona modeled after some of the female characters from Dynasty Warriors.
Drunk with Power: Pirate Warriors 2. Teach when he finally gets Whitebeard's Quake powers. Taken Up to Eleven when he combines his own Darkness with the Frenzy Dial.
Enemy Mine: Repeatedly occurs in Pirate Warriors 2, usually because both parties recognize that there is a far bigger threat to worry about. By the end, even the Marines are (mostly) agreeing to work with the Straw Hat - White Alliance to take down Blackbeard's forces.
Fatal Flaw: In Pirate Warriors 2, just like in the main series, Sanji is completely helpless against female characters. The game even warns the player when the level has women in it. This means that Sanji can't do any damage to them and the only way for him to hurt them is to perform a Crew Strike Combo and get someone else to do the job.
Final Boss: Akainu in the first game, a berserk Teach in the second.
Hoist by His Own Petard: Blackbeard loses control of the berserkers and desperately uses Black Hole. This causes the Frenzy Dial "fog" to merge with his "darkness", turning himself and everyone around him into loose berserkers.
Impossible Hourglass Figure: The female characters. This is nothing new, as it is the case in the main series as well, but it is lampshaded in the sequel, with Whitebeard referring to Robin as "an extremely slender young woman".
Interface Spoiler: On the character select screen and in the gallery of the sequel, non-Straw Hat Pirate playable characters are ordered according to when they become playable. However, they are unlocked in the gallery as soon as they're encountered, and not necessarily when they're properly playable. That means the gallery can spoil the order in which the characters are unlocked.
It's Personal: Pirate Warriors 2 has Ace's reason to find Teach. He finally finds him during the Marineford War, but unlike the canon story, this time he has Whitebeard with him.
Limit Break: It wouldn't be a Dynasty Warriors without those. Some of them in the first game were a Super Mode, but all of them are attacks in the sequel.
Marathon Level: One of the DLC challenges is an all-out brawl in which you're alone and have to defeat 9999 enemies.
Meganekko: Nami's taunt in both games has her putting on glasses.
Mighty Glacier: Whitebeard moves pretty slowly, but can dish out a lot of damage and his Conqueror's Haki has a wide range that can knock out a lot of Mooks and stun bosses.
This also applies to Franky: his attacks are slow and he needs to refuel on cola every now and then, but he hits hard, and has a decent range.
Jinbe attacks slowly, moves slowly, and overall feels heavy, but he hits like a darn tank, and many of his attacks are very wide.
Multiple Endings: The second game. You're at first stuck on the normal ending route, but fulfill certain conditions and you'll be able to go for the true ending.
Mythology Gag: The games have a ton of references to the manga, ranging from attacks (some of them even hailing from filler material) and quotes to trophy names, poses and indirect cameos.
Old Save Bonus: Starting up the second game with a save file of the first game in the PS3 will net you 500,000 Berries and a rare golden coin right off the bat.
Promoted to Playable: Some characters who only appeared as bosses or cameos in the first game are playable in the sequel, like Kuma, Garp, and the Admirals.
Puzzle Boss: In Usopp's battle against Luffy, he's severely outmatched, understandably. You have to lure Luffy into traps to lower his health. While you do have some useful techniques to do good damage to him, the traps do the most damage.
Rare Random Drop: The coins start to become a real pain to find the less there are left. The Straw Hats' New World Marks are only capable of being found if the player does exceptionally well in a level note 700+ ! points, and even then they still might not get them. To say nothing of the Marks of characters such as Sabo and Marco...
Ryu and Ken: Some of the non playable boss characters are simply copies of playable characters in PW2, examples include Sentomaru as Jinbei and Vista as a pre-timeskip Zoro.
Set Bonus: In he first game, by putting three coins together on a board that are linked in some way(i.e: members of a crew, devil fruit users, noses) their usual stat boosting abilities are negated for a special effect.
Taken for Granite: Some of Hancock's attacks petrify the enemies for a short while, making them vulnerable to more hits. As a funny nod to the main canon, they also freeze in a silly, lovey-dovey pose.
To Be Continued: Every Main Log level ends with one, mirroring the main series. Also just like the main series' first half, the first game ends with "GO TO NEW WORLD" instead.
True Ending: Unlocked after clearing the first ending and a select few of the available crew missions in PW 2, where Whitebeard survives and things go south for Teach.
Victory Pose: One for each character (Usopp gets an extra one for Sogeking), which are obviously loaded with references to the manga. Franky's pose in the first game, for example, is directly lifted from his introductory speech.
Weak, but Skilled: Nami's playstyle. Her attacks are generally the weakest of all the playable characters, but are used as setups (by making clouds over enemies heads) for the powerful Thunderbolt Tempo.
Perona in the sequel. She has a hard time when it comes to building her Special Meter and her attacks don't do much damage but she can send out ghosts to inhabit/depress the enemies, which then enables her to deal meaty amounts of damage by removing ghosts from the depressed enemies(blowing them up).
We Cannot Go On Without You: In the other characters' stages in Another Log, if a certain character (usually Luffy) is defeated, it's an automatic Game Over. Many stages in the second game also cause an instant Game Over if (a) certain character(s) happens to fall in battle.