After the conclusion of King of Iron Fist Tournament 4, father Kazuya Mishima and son Jin Kazama, battle each other at Hon-Maru, located within the Mishima estate. Jin quickly beats his father. The eldest Mishima, Heihachi, enters Hon-Maru to find his son defeated and unconscious. Heihachi and Jin begin battling. During the battle, Jin begins to manifest the Devil he inherited from his father, Kazuya. Just as it appears that Jin will kill Heihachi, Jin suddenly has a vision of his mother, Jun Kazama, and regains himself. He tells Heihachi to "thank his mother" for not killing him. He flies away soon after.
Shortly afterwards, just as Heihachi and Kazuya are coming to, a bunch of Jack-4 robots sent by G Corporation come crashing through Hon-Maru's walls and attack. Both Kazuya and Heihachi are surprised at the sight and begin battling as a team against the invasion. During the battle, however, Kazuya betrays his father by throwing him into the path of the army of robots and escapes. Seconds later, the robots self-destruct, destroying Hon-Maru. A mysterious character, Raven, watching on top of a nearby cliff, speaks into his earpiece and reports, "Heihachi Mishima is dead." Sometime later, a new King of Iron Fist Tournament is announced.
Meanwhile, Jin Kazama's Devil Gene is going berserk, and he decides to search for the one responsible for the change by entering the new tournament. Kazuya also enters to find out exactly who in G Corporation betrayed him and to find out about the mysterious figure behind the tournament, since the reigning King of Iron Fist, Heihachi, is presumed deceased.
As Jin and Kazuya progress through the tournament, the secret sponsor is finally revealed: Jinpachi Mishima, the father of Heihachi and who has been missing for the past fifty years. As it turns out, Jinpachi is the founder of the Mishima Zaibatsu and was a respected martial arts master until his greedy son, Heihachi, stole the company from him and had him imprisoned underneath Hon-Maru after Jinpachi attempted a Coup d'état (Heihachi was steering the company into the military industry, something Jinpachi believed was not right). Jinpachi died soon afterwards of starvation until a mysterious entity took over his mind and granted him immortality, and Jinpachi was finally freed from his prison when the Jack-4's destroyed Hon-Maru. As of now, the mysterious entity is slowly consuming Jinpachi's mind, and Jinpachi has announced the tournament in hopes that someone will kill him and put an end to his reign of terror before it even starts.
In the end, Jin makes it to the final, and faces his great-grandfather in combat. Ultimately, Jin manages to defeat Jinpachi, who dissolves into dust and disappears, his wish fulfilled. Jin is now the new owner of the Mishima Zaibatsu.
Tekken 5 is credited for taking the series back to its roots. It incorporates a faster, more fluid fighting system, improved graphics, returning characters, and some of the Tekken series' trademark infinite stages. New to Tekken 5 is the crush system which affects the vulnerability of a character while they attack. For example, a move with jumping properties, such as a hop kick, will be completely invulnerable during most of its animation time to all of an opponent's low attacks.
It also retains its wall juggling concept from Tekken 4, but the element is effectively less easy to abuse and easier to defend against. The home version is a collector's edition of sorts, as it includes full arcade emulations of Tekken, Tekken 2, Tekken 3 and StarBlade. Tekken 5 also allowed players to customize their fighter for the first time, allowing them to change the colors of their outfits, buy additional costumes (only available to a few characters), and equip them with items by using money gained from playing the Story, Survival, Time Attack, the side-story Devil Within, and Arcade Battle modes.
The Devil Within mode is a fighting minigame in direct lineage to the Tekken Force modes in Tekken 3 and Tekken 4 called Devil Within. This minigame follows the adventures of Jin Kazama as he searches the G Corporation in search for information on his missing mother and other answers. Being somewhat story oriented, the player is not permitted to use their own choice of characters like previous iterations. The game also uses a limited button system, incorporating a Block and Jump button as well as sizing down the attack buttons to simple "Punch" and "Kick" buttons (though, some of Jin's fighting special moves can still be performed such as his Demon's Paw). Along with fighting various Jack models in the mini-game, the player must pursue minor key quests to proceed. This mode is one of the two ways to unlock the playable version of Jin's Devil incarnation.
Due to the huge imbalance in the original version of the game, most notably concerning the likes of Steve and Kazuya, an arcade-exclusive update was released, known as Tekken 5.1. Aside from attempting to balance the game, 5.1 also changed the health bar from yellow to green.
|Anna Williams (unlockable)|
|Baek Doo San (unlockable)|
|Bruce Irvin (unlockable)|
|Eddy Gordo (unlockable, acts as a costume swap of Christie Monteiro)|
|Heihachi Mishima (unlockable)|
|Kuma II (unlockable)|
|Panda (unlockable, acts as a costume swap of Kuma)|
|Wang Jinrei (unlockable)|
|Devil Jin (unlockable)|
|Roger Jr. (unlockable)|
|Jinpachi Mishima (unplayable, final boss)|
|Doctor Bosconovitch (cameo in Bryan, and Yoshimitsu's prologue)|
|Jane (cameo in Jack-5's prologue and ending)|
|Roger (cameo in Roger Jr.'s prologue and ending)|
|Violet (cameo in Lee's prologue)|
|City at Sunset|
|Final Stage 2|
- This Tekken game is notable for having these distinctions:
- The first game in the series to be a sponsor for a professional combat sport. That being the global wrestling company, WWE (World Wrestling Entertainment) hosting Backlash back in April 2005.
- The first game to include music in the main menu and options mode.
- As of 2012, currently the only game to feature singing in its opening cinematic.
- The first game to use a data card system in the arcades for saving records, ghost data, and purchasing customization items.
- The first game where a character can use projectiles as a special move.
- Upon the game's initial arcade release, Heihachi Mishima was believed to have died in the attack on Hon-Maru. It was not until the version update that added the unlockable characters to the roster (including Heihachi) that he was confirmed to have survived, with the scene of him rising out of the rubble added to the intro.
- The song heard at the PS2 intro is in fact not one, but two songs. The pure instrumental is a remix of "I'm Here Now" performed by Nobuyoshi Sano, while the second part (with the singing) is titled, "SPARKING" and is performed by Tom Leonard and Jeff Pescetto.
- Mokujin and Jin Kazama (in his non-devil form) are the only two characters in the game not shown in the opening FMV of the console version of the game.
- The narrator of this game was Robert Belgrade, who is famous for voicing Alucard from Castlevania: Symphony of The Night.
- In the 2008 movie Drillbit Taylor, the two main characters are shown playing Tekken 5. The characters they used were Jack-5 and Yoshimitsu.
- In a series first, the final boss (Jinpachi Mishima) is not a playable character, even in the console version. He can only be obtained using a cheat device, even so the Announcer has in-game recorded about Jinpachi for the VS mode, in fact if Jinpachi is used the announcer will play the win lines "Jinpachi Mishima WINS!", indicating that originally Jinpachi was supposed to be playable in the original release.
- Jinpachi was however made fully playable in the PlayStation 3 version of Tekken 5: Dark Resurrection.
- Parts of the intro were shown during the early stages of the game's development. In the finalised version, the graphics in the intro have been completely redone.
- The uneven terrain of Tekken 4 was left out of this game, along with the removal of the walls in certain stages, making them "infinite" like stages were in pre-Tekken 4 games.
- Some characters may have a different cutscene that plays if the player loses a match that precedes a cutscene in Story Mode.
- As with Tekken 4, Tekken 5 features a short prologue and epilogue (before the ending FMV) showing artwork of the character emphasizing what the narrator is narrating.
- The music that can first be heard in both Nina and Anna Williams' endings is the exact same bit of music that starts off the theme of Raphael Sorel in Soul Calibur III.
- The phrase in the vs screen "Get ready for the next battle!" is now said by the announcer.
- The word "replay" now flashes smoothly. That word is in red Impact font, but in Tekken 5: Dark Resurrection, the color is silver and is in a Eurostile font.
- When the character speaks before and after the match, subtitles are now displayed and the fight display is omitted.
- Some character voices have been changed. For example, Christie Monteiro's voice is now Lisle Wilkerson, who is currently the voice of Nina Williams, Lee Chaolan's voice is now Ryōtarō Okiayu (this time spoke in his native language, Japanese, due to his Violet identity exposed in the previous game), etc.
- The Korean (originally English version of Tekken 4) and Chinese languages have been added for their respective native countries’ fighters in all versions, except for those who have background reasons like Lei Wulong and Ling Xiaoyu.
- Roger and Alex, as well as Violet were originally meant to return in this game as most particularly palette swap to Roger Jr. and Lee respectively. However, only Violet who re-appear as Lee’s purchasable customization sets, rather than as one of the default costumes up to Tekken 6. Though Alex and Violet return playable default in some future games since becoming separate characters Tekken Tag Tournament 2 (the latter return as Lee’s default palette swap in Tekken 7), Roger Sr. remained NPC and never return playable.
- In the NTSC version, the replay slows down 1.5 seconds before KO, but in the PAL version, it slows 3 seconds before KO.
- The arcade cabinet featured PlayStation 2 controller ports on both sides, giving players the option of using a PS2 controller instead of the built-in joysticks.
- Jin's stance in Street Fighter X Tekken is taken from Jin's pose in this game's cover.
- This is the final console game in the series where characters must be unlocked in the game's primary modes.