A game Star Wars: Republic Commando begins on the world of Kamino, where the Delta Clone Commandos were first created. On the planet, they received improved training and were sent to a test military operation on Geonosis. Their first mission was to eliminate Sang Feng, the leader of the rival trade federation.

Delta manages to complete the mission, and then they reach the spherical ship and destroy the anti-aircraft shelter. They managed to cause significant damage throughout the enemy system, while downloading the launch codes for the entire Confederate flotilla. They blew up a huge spaceship and successfully escaped from the scene of hostilities. In STAR WARS Republic Commando, the player will become the leader of an elite squad of Republic commandos. The story campaign includes 10+ missions where you will need to penetrate enemy territories and destroy key objects and targets.

The user controls not only the main character, but also the rest of the squad. Secondary fighters follow orders from gamers. Artificial intelligence shoots and moves behind its partners, but performs assigned actions, such as occupying a certain point, retreating, covering, and others. Gameplay includes multiplayer mode. The solo adventure requires you to control a team of 4 units. The events of this part take place before the third episode of the saga.