Jet Set Radio Future is set in a futuristic Tokyo. The follows a gang of J-pop inspired skaters and their efforts to fight an oppressive regime with music, urban mischief and spray-paint while beating off rival gangs.
With the success of Jet Grind Radio for the Dreamcast, Smile-Bit and Sega have decided to release a sequel which is also a prequel in the story called Jet Set Radio Future. The story follows a gang called the GG's, which consists of the leader Corn, Co-Leader Gum, and the main character YoYo. Throughout the game, you'll meet various characters in which you have to complete their specific challenges if you want to gain the ability to play as them and have them join your gang. 
One of the unlockable characters, Beat, spraying graffiti.
Set sometime in the future, the story of Jet Set Radio Future revolves around futuristic Tokyo which is in control by a man named Gouji and his police force, also known as the Rokkaku police. The government is very strict, and several gangs, including the GG's, have decided to rebel against the oppressive government and fight back. Gameplay is similar to the original Jet Grind Radio. You'll take control of any character that you have in your gang and you must go around a level collecting spray cans. Yellow cans get you 1 spray while blue cans get you 5. You must then tag up the graffiti of other gang members. After you tag a certain amount of graffiti, you are done with the level. Some require you to fight a boss though.

DJ Professor K
Your gang is given information by a secret underground radio station called, "Jet Set Radio." The host, DJ Professor K, gives you clues and hints as to where to go and whats going on in futuristic Tokyo. Each mission is usually structured around going into a new stage and covering a rival gang's graffiti up with your own. The act of spraying graffiti has been revamped since the original game, instead of manually painting the graffiti, the player simply has to hold the right trigger to spray.
During the game, you'll generally fight the Rokkaku Police. In fact, that is the only thing you'll be fighting. To fight the soldiers, you must bump into them, causing them to fall, and you must spray them with graffiti until their health lowers. Some guards are tougher to take down, and thus you'll have to use a speed dash which is done by collecting 10 cans and pressing B. Bosses have more health than the soldiers so the soldiers will only take one can to take down while others will take several more cans to take them down.
The game features the same kind of cel-shading that it was well known for in the original game and is considered by many to be one of the most impressive looking games on the Xbox to date. The game also has an amazing and quite lengthy soundtrack. The soundtrack adds up to about 30 songs ranging from various J-Pop artists and video game music artist such as BIS and Scapegoat Wax. JSRF also features a multiplayer mode which is only available to play locally. They have races, capture the flag, and various other games. All of these games can be played with up to 3 other players. As well as a multiplayer mode JSRF also features a robust graffiti editor allowing the player to create their own graffiti tags for use in the game. New graffiti designs can also be unlocked.
Note that the other names are from Jet Grind Radio. These characters were also in the original game but had a name change in Jet Set Radio Future.

Cover of the Japanese Soundtrack.
Soundtrack for Jet Set Radio Future:
- Humming the Bassline (D.S. Remix) – Hideki Naganuma
- Aisle 10 (Hello Allison) – Scapegoat Wax
- The Answer (The Latch Brothers Remix) – Bran Van 3000
- Baby-T – Guitar Vader
- Birthday Cake – Cibo Matto
- Bokfresh – Richard Jacques
- Latch Brother Bounce – The Latch Brothers
- Fly Like A Butterfly – Hideki Naganuma
- The Concept Of Love - Hideki Naganuma
- Funky Dealer – Hideki Naganuma
- Shape Da Future – Hideki Naganuma
- Statement Of Intent – BIS
- Koto Stomp – The Latch Brothers
- Count Latchula – The Latch Brothers
- Let Mom Sleep (No Sleep Remix) – Hideki Naganuma
- I Love Love You (Love Love Super Dimension Mix) – Guitar Vader
- Rockin' The Mic (The Latch Brothers Remix) – The Prunes
- I'm Not A Model – Russell Simins
- Oldies But Happies – Hideki Naganuma
- Me Likey The Poom Poom – The Latch Brothers
- Rock It On (D.S. Mix) – Hideki Naganuma
- The Scrappy (The Latch Bros Remix) – BS 2000
- Sneakman (Toronto Mix) – Hideki Naganuma
- Ill Victory Beat – The Latch Brothers
- What About The Future – Richard Jacques
- Teknopathetic – Hideki Naganuma
- Like It Like This Like That – Hideki Naganuma
- Sweet Soul Brother (B.B. Rights Mix) - Hideki Naganuma
- That's Enough (B.B. Rights Mix) – Hideki Naganuma
- Grace And Glory (B.B. Rights Mix) – Hideki Naganuma
Character list
Beat- Beat was the main chracter of Jet Grind Radio and is featured on the boxart of Jet Set Radio Future. While in this game he does take more of a backseat role there are still several important roles in the plot involving him. Beat is also the first character that you unlock.
Yo-Yo: yoyo is a green haired blue hoodie wearing member of the GG's and is the character that you start the game with. You use him as you go through the tutorial and is one of the only 3 available characters in the start of the game
Corn: Known as Tab in the previous game, Corn in this game is the leader of the GG's and is often found sporting a baseball cpap (with a very exagerrated height) and a blue coat. Other then when he is offering general support he does not really have any important roles in the main storyline. Corn is also one of the 3 characters that you have available from the start of the game.
Gum-gum is the co leader of the GG's and is one of the few female members of the gang. She offers general advice pertaining to the storyline at several points throughout the game, and is the member that teaches you the controls and gameplay tips at the beginning of the game. She is one of the only 3 characters that you have unlocked from the beginning of the game
Combo: Combo is a very tall muscular man that is always holding a boombox. He enters the storyline when rival gang poison jam covers the area of shibuya terminal in graffiti. After you complete the level of covering up there graffiti combo appears and accuses you of commiting the act and then challenges you to a grinding challenge. If you beat him at the challenge he becomes the second unlocked character that joins your gang.
Ryth-Ryth is the next character you can unlock and is an entirly secret character which means that she has nothing to do with the plot and if you really want to you dont even have to unlock her! You find her in Rokkaku Dai Heights and must play a game of tag with her until she will agree to join your team.
Garam-Garam is found when you enter the Tokyo underground sewer system. when you get stuck in a pit in the sewers he appears to save you, but first he teaches you an advanced skate trick known as grabibing it helps you to get huge air off of ramps. He then sends down a pole allowing you to grind up to safety and joins your team.
Boogie-Boogie is a secret character that you can unlock in Kiboagaka Hill. In order to get her you must simply talk to her. This is a bit diffiicult though as she is onyl on the screen for a short amount of time and you must grind your way up to her before she disappears. Once you talk to her she joins your team and makes no other appearances in the main plot.
Clutch-cltutch initially appears into the story as an antagonist as he steals all of your graffiti souls (a collectable object in the game) however after you track him down (he will spawn from level to level) and talk to him he regrets his actions, returns your items and joins your gang.
Jazz-Jazz is the final story related character you unlock, when both you and her are kidnapped by the rival gang noise tanks you are forced to team up together with her to face off against them in a game of Death ball. Which if you win has her join your team and you both getting released.
Cube-Cube much like Clutch is an antagonistic character initiially, she is the leader of the gang known as Poison jam who are responsible for a lot of mishap throughout the story. However if you talk to Gum enough she will tell you that cube is looking for you down in the sewers. If you go down and talk to her again she challenges you to a race which if you complete makes her join your gang.
Soda-the final hidden character in the game, soda appears in Highway Zero and simply joins your team if you beat him in a race because he is "bored" there is nothing else in the story to do with this character as you unlock him pretty late in the game.
Other characters
The following characters while not obtainable in the storyline are unlockable by completing street challenges after story mode is complete .
A.KU.MU: Akumu is the final boss of the main storyline, and is also the hardest character to unlock, You unlock him by collectiong all fo the graffiti souls in Fortified Residential zone and then getting a Jet ranking in all of its challenges
Doom Riders-the doom riders are one of the teams of characters that oyu must face off against in a game of Death Ball. You unlock there leader by both collecting all the graffiti souls and getting a jet ranking in Dogenzaka Hill
Gouji-the primary antagonist in the game, he is unlocked by collecting all the graffiti souls and getting a jet ranking in the street challenges of Rokkaku Dai Heights
Immortals- a gang that, similarly to Poison jam spreads graffiti around the cities that you must cover up. You unlock the immortal's leader by collecting all the graffiti souls and beating the street challenges of Skyscraper District and Pharoah Park
Love Shockers- one of the gangs that you are forced to play a game of death ball against with Jazz.. There leader is unlocked by geetting all the graffiti souls and achieving jet ranking in the challenges of Hikage Street.
Noise Tank- Noise tank is the gang that in the story kidnaps you and Jazz. You unlock them by getting the graffiti souls, and getting a jet ranking in the street challenges of Highway Zero.
NT-3000-NT-3000 is a robot clone of Yoyo that you must fight towards the end of the campaign. He is unlocked by collecting the graffiti souls and achieving a jet ranking in Sky Dinosaurian Square.
Poison Jam- Poison Jam is a rival gang and one of the first antagonists in the game. You unlock them by getting all graffiti souls and achieving jet ranking in the street challenges of BOTH Tokyo Underground Sewage facility AND Bottom Point of the Sewage facility.
Potts-Potts is the GG's dog and during the story simply sits around the garage barking. You unlock him by getting all the graffiti souls and achieving jet ranking in Kiboagaka hill.
Rapid 99- a gang that you face off in a game of capture the flag early on in the campaign in order to gain information on Poison Jam. You unlock them by getting all the graffiti souls, and achieving Jet Ranking in 99th Street.
RoBoy-in the game roboy is basically a menu, by talking to him you can save your game, edit your music options, change your graffiti style, and do street challenges. You unlock him by getting the graffiti souls and jet ranking in all street challenges of Chuo Street,
Zero beat-Zero Beat is an evil negative android clone of regular beat. You fight him as the second to last boss in the game. He is unlocked by getting all the graffiti souls and achieving jet ranking in all of the challenges in Shibuya Terminal

The bundled version featuring both Sega GT 2002 and JSRF.
With the release of the Xbox 360, there were also some issues with Backwards Compatability. For example, owners of the game were fine and were able to play, however, the people who had it come with the Xbox and bundled with Sega GT 2002 could only play Sega GT and not Jet Set Radio Future. Microsoft eventually fixed the bug and added an update so now everybody can play their copy of Jet Set Radio Future.