After the rise of the imperial Chalukyas of Badami, the Gangas accepted Chalukya overlordship and fought for the cause of their overlords against the Pallavas of Kanchi. The Chalukyas were replaced by the Rashtrakutas of Manyakheta in 753 CE as the dominant power in the Deccan. After a century of struggle for autonomy, the Western Gangas finally accepted Rashtrakuta overlordship and successfully fought alongside them against their foes, the Chola Dynasty of Tanjavur. In the late 10th century, north of Tungabhadra river, the Rashtrakutas were replaced by the emerging Western Chalukya Empire and the Chola Dynasty saw renewed power south of the Kaveri river. The defeat of the Western Gangas by Cholas around 1000 resulted in the end of the Ganga influence over the region.
Though territorially a small kingdom, the Western Ganga contribution to polity, culture and literature of the modern south Karnataka region is considered important. The Western Ganga kings showed benevolent tolerance to all faiths but are most famous for their patronage towards Jainism resulting in the construction of monuments in places such as Shravanabelagola and Kambadahalli. The kings of this dynasty encouraged the fine arts due to which literature in Kannada and Sanskrit flourished. Chavundaraya's writing, Chavundaraya Purana of 978 CE, is an important work in Kannada prose. Many classics were written on various subjects ranging from religion to elephant management.