Serenno was a separatist world lead by Count Dooku. It's first appearance in the ambush games was in The Sith Temple Game, it appeared once again in Haters of the Jedi II: Order 66 and Haters of the Jedi III.
The Sith Temple GameEdit
Haters of the Jedi II (19 BBY)Edit
After being shot down by the Secret Weapon, Kaas Zwervus ' ship, the Stofzuiger and it's crew crashed on Serenno's surface. When Dooku heard about this he sent a small droid army to support Pindus during his mission. The next day Pindus and his group left Serenno on the repaired ship.
Haters of the Jedi IIIEdit
Serenno was the main location in Haters of the Jedi III: Rise of the Empire. Boba and the group haters gathered in a castle on Serenno and spend most of the game there.