Holocron Locations
Tiny blue cubes are hidden throughout the Star Wars Play Sets, collecting them unlocks Concept Art. Here are the fifteen from Twilight of the Republic.
Geonosis
Just the one Holocron on Geonosis.
Star Wars Concept #32
High up on a ledge to the left of the entrance to the droid factory.
Coruscant
There are seven of the cubes on the Coruscant planet.
Star Wars Concept #35
Behind a grate on a building in the area to the left of the temple. Press a button behind to open it.
Star Wars Concept #36
Behind a glass panel in the back left corner of the temple. To open it go to the top right corner of the temple and use the force to open a panel blocking a button.
Star Wars Concept #40
At the top of the southern-most tall tower in the area to the left of the temple.
Star Wars Concept #42
In the back of a shop in the top right corner of the area to the left of the temple, lower section. Shoot a target to open it.
Star Wars Concept #37
On the rail going behind the amphitheatre.
Star Wars Concept #31
In a dip on top of the temple.
Star Wars Concept #41
Behind a grate opposite the amphitheatre, shoot a nearby target to open it.
Tatooine
Five of them on Tatooine.
Star Wars Concept #39
Inside a building between the launchpad and Jabba's. Shoot a target above the door.
Star Wars Concept #33
In the cantina, part of a mission.
Star Wars Concept #38
In a cave in the corner of the desert. same end as the sand village but other corner.
Star Wars Concept #34
On top of a rock arch near the broken skiff.
Star Wars Concept #45
Inside the sarlacc pit. Throw a bantha in to get it to spit it out.
Naboo Space
One in Naboo Space.
Star Wars Concept #43
On a small planet-like structure you can land on. Press a button next to the launchpad and quickly run to the opposite side of the ball to reach it in time.
Naboo
And one on Naboo itself.
Star Wars Concept #44
Inside the base of a statue through the first door. Press the button on a ledge above the door to open it.
Collecting all 15 of the Holocrons will unlock the Coruscant Library for the Toy Box and earn you the feat "Finder of Wisdom".