Here Suikoden IV review by Flare En Kuldes
Suikoden IV continues many of the gameplay concepts pioneered by it predecessors along with changes. It is the first game in the Suikoden series to feature voice acting for most characters, except the hero. Suikoden IV is the first game of the series to be set at sea; travel on the world map is accomplished by ship. In contrast to Suikoden III, where the six person party was divided into three controllable groups, Suikoden IV's party consists of four individually controllable characters. During combat, characters can combine effort in the form of physical "Unite attacks" or runic magic combinations. As with previous games in the series, there are individual battles (duels) as well as battles between customizable naval forces. The naval forces can be customized to use particular runic elements through choice of captains and commanding officers; each element has a weakness and strength over another element. There are several mini-games contained within the game, unrelated to the main storyline. On the first play through the game, only a fraction of the world map is viewable, a feature not seen before in a Suikoden Game.
Story
Suikoden IV begins its tale with a training session (for both the player and the characters), where the Hero (identified in the novelization as Lazlo) and his best friend Snowe Vingerhut face off against their Commander and Vice Commander, Glen and Katarina respectively, out at sea. After the training concludes, Lazlo and his fellow knight trainees head home to Razril, where they are to be pronounced full-fledged Gaien knights.
After the ceremonial Kindling Ritual and a night of feasting, Lazlo awakens the next morning for his first duties as a new knight, including the task of escorting a man named Ramada to the neighboring island of Iluya. During the trip there, they are attacked by Brandeau and his pirates. Snowe abandons the ship after being fired upon by "rune cannons," while Lazlo decides to brave the attacks and stay, thus inspiring jealousy in his cowardly comrade. Brandeau then boards Lazlo's ship and challenges him to a duel, which the young knight unexpectedly wins. As a last effort, Brandeau unleashes the power of the Rune of Punishment and attempts to destroy everyone, but a mysterious force shields Lazlo from its might. Glen arrives to save his men, and in that brief moment, the Rune of Punishment is passed from Brandeau to Glen, after which Brandeau evaporates into dust.
Soon after, the knights retreat back to Razril. Several enemy fleets attack in succession, finally forcing Glen to repel them with the power of the deadly Rune. In the aftermath, Lazlo finds the Commander dying, and unwittingly becomes the Rune of Punishment's next bearer. Snowe arrives just in time to witness Glen's evaporation and blames Lazlo for killing him. Katarina, who assumes command in Glen's stead, believes Snowe's story and sentences Lazlo to exile from the island. Drifting aimlessly on a small boat, Lazlo discovers that two of his fellow knights, as well as a wandering merchant, have stowed away to join him.
As Lazlo and his companions drift on the open sea, they come across one of the militaristic Kooluk nation's merchant ships, which takes them on board. However, Lazlo discovers that the ship is actually a military vessel, captained by the Kooluk hero Troy, and that Lazlo's former charge Ramada had been a Kooluk spy. Troy catches Lazlo eavesdropping, draws steel and easily defeats him in a fight, but then allows the banished knight and his friends to flee. Adrift again, the companions wash up on a deserted island, where they forage for materials and eventually build a raft to leave. This time, they encounter a ship from the friendly kingdom of Obel, and are welcomed as guests.
The ship's crew inspects Lazlo, recognizes the Rune on his hand, and sends him to meet with Lino En Kuldes, Obel's young and capable king. Lino En Kuldes hires Lazlo, putting him in charge of recruiting new talent to help shore up Obel's defenses in the event of a Kooluk invasion. Lazlo's first assignment is to meet and recruit the inventor Oleg. During their meeting, Oleg's invention (the world's first movie camera) captures Kooluk's Rune Cannon strike on Illuya. This prompts the King of Obel to take serious action, but too late; Obel is next on Kooluk's list, and Lazlo, his friends, and Lino En Kuldes himself are all forced to flee in Obel's secret flagship (which becomes the hero's HQ for the remainder of the game). The Kooluk forces, with the backing of the arms merchant Graham Cray, conquer Obel with ease, establishing a foothold for their planned southern expansion.
In need of help, Lazlo and company join forces with the pirate queen Kika, who suggests the recruitment of the tactician Lady Elenor Silverberg. Elenor is reluctant to help, but joins once she hears that Graham Cray is involved. She quickly forms a plan to liberate each of the Island Nations, then bring them together to face the Kooluk as a united front.
Lazlo leads his forces from island to island, recruiting more and more along the way. Eventually, his campaign takes him back to Razril, where Snowe and his lord father have sold everyone out in the hopes of a peaceful takeover. The liberation of Razril succeeds, and Snowe leaves in further disgrace. (Later, depending on the player's actions, Lazlo either tracks Snowe down and befriends him again, tracks him down and executes him, or just forgets about him entirely.)
As the company's forces continue to grow, Lino En Kuldes successfully leads the fight to recapture Obel. That leaves only Kooluk's regional base of operations, El Eal. Elenor devises a two-pronged attack, which ultimately brings both she and Lazlo face-to-face with Graham Cray. Cray summons an enormous tree-like creature, both to dispose of Lazlo and to claim the Rune of Punishment for himself. Lazlo defeats the tree, leaving a wounded Cray in the now-collapsing fortress. As the company flees, Elenor stays behind to confront Cray - her former student - and apparently dies along with him in El Eal's collapse.
Just as Lazlo escapes the fortresss, Troy appears and challenges him to a final duel. They fight aboard a sinking ship, where Lazlo claims victory. Returning the favor from before, Lazlo offers Troy a lifeline, but Troy chooses to go down with the ship instead.
El Eal explodes, forcing Lazlo to activate the Rune of Punishment one last time, followed by Lazlo passing out. It is not made entirely clear what happened after Lazlo saves the fleet; however, the final, post-credits scene shows Lazlo floating motionless in a lifeboat, presumably sent away from the Island Nations to remove the Rune of Punishment which had caused so much destruction from the region. If the player recruited all 108 Stars of Destiny, Lazlo then awakens and attempts to flag a passing ship.
Lino En Kuldes then declares himself the leader of a new Island Nations Federation.