I doubt it. The ideas in either Divine Divinity or Eddings' books are about as new as egg on toast; the "Polgara" bit was probably done in tribute. Even if Larian got some ideas from Eddings, you should give credits where credits are due.

Valaquenta:

- Eru Illuvatar and beings of the Ainur race join in a song of visions and creation; Melkor, in his ambition, causes disharmony. He ends up seducing Sauron to his side. Compare and contrast with Torak and Zedar the Apostate.

Quenta Silmarillion:

- Melkor, with the aid of Ungoliant, destroys the Two Trees. He also causes a number of wars, not the least of which is the Kinslaying war of the Elves. Compare and contrast with Torak's misuse of the Orb and the disasters that followed.

Lord of The Rings:

- Commpare and contrast the plot with that of the Belgariad. Change "Ring" to "Orb" or vice versa.
- Olorin is a Maia, a lesser Ainu and servant of the Valar. He plays a role of wise, guiding wizard. Compare and contrast with Belgarath.
- Aragorn is an heir to a throne, raised in anonymity to escape Sauron's notice. He later claims his kingship. Aragorn is also Isildur's Heir, who Sauron fears most. The ideas behind Belgarion are pretty obvious, here.
- The Istari is a brotherhood of sorts, consisting of Maiar that the Valar sent to help Arda.
- Olorin contests with Curumo, who has betrayed the Istari and the Council of the Wise. Belgarath and Zedar, hello?

Don't take me wrong. Eddings was an entertaining read the first time through - shallow, quick, pulpy - although after all his characters have beceom demi-gods and it's evident that his villains are as intelligent as potted plants, it becomes stale. Divine Divinity is a good game, but the story is not what I'd call original.