Star Force Unleashed Wars

Set in between Star Force Unleashed Wars – Revenge of the Sith and Darth Vader is sent by Emperor Palpatine to
destroy a Jedi who survived Palpatine's Jedi purge and is hiding on the Wookiee homeworld, Kashyyyk.
After defeating the Jedi in battle, Vader discovers his child who is strong in the Force and raises him to become his apprentice, unbeknownst to the Emperor.
When the apprentice (known in the game as "Starkiller", and whom the player now controls) reaches adulthood,
Vader sends him to kill the remaining Jedi as training for his ultimate goal: assassinating the Emperor so Vader and Starkiller can rule the galaxy together.
However, the Emperor discovers Starkiller's existence and forces Vader to kill the apprentice;
Vader hurls Starkiller into space, but secretly dispatches droids to retrieve and revive him.
Star: Wars Force Unleashed - A New Hope, begins with the player controlling Darth Vader as he searches Kashyyyk for the Jedi.
Vader sends his apprentice to foster a rebellion among those who resist the Empire, distracting the Emperor so Vader can make his move.
Breaking into various Imperial facilities, Starkiller rescues Rogue Shadow pilot Juno Eclipse, Jedi Master Rahm Kota, Princess Leia Organa, and Senator Bail Organa.
In the process, Starkiller learns from Kota about the Jedi way, ultimately sparing Jedi apprentice Maris Brood, who had succumbed to corruption by the dark side after Starkiller murdered her master Shaak Ti.
Starkiller travels between missions aboard the Rogue Shadow, developing a close relationship with his crew.
Senators Organa, Mon Mothma, and Garm Bel Iblis meet to plan a rebellion against the Empire, but are interrupted when Darth Vader arrests them and Kota.
Vader attacks Starkiller and reveals that Starkiller was never meant to overthrow the Emperor;
from the beginning, he was the Emperor's tool to expose his enemies, and that Vader's plans to overthrow the Emperor did not include Starkiller.
Surviving Vader's attack, Starkiller uses the Force to ascertain the senators' and Kota's location: the Death Star.
Inside the station, Starkiller duels Darth Vader. Kota attempts to fight the Emperor, but is incapacitated by the Emperor's Force lightning.