The value of the IPO, which could be about 2.2 - 2.9 trillion won, is based on an expected indicative price range of about 130,000 won to 173,000 won per share, the source said.

If the pricing is not at the bottom of the range, the listing on the KOSPI <.KS11> is expected to be the second-largest ever for the bourse behind the 4.9 trillion won listing of Samsung Life Insurance (>> Samsung Life Insurance co., Ltd) in 2010.

The numbers could be subject to change before a securities report is submitted to regulators, the source said. The source was not authorised to speak to media and thus declined to be identified.

A spokesman for Netmarble, which is backed by China's Tencent Holdings (>> Tencent Holdings Ltd), declined to comment.

Analysts have revised up Netmarble's estimated market capitalisation to between 10 to 15 trillion won after its blockbuster mobile game "Lineage 2: Revolution" posted record sales since its December release in South Korea.

Netmarble, which is listing to raise funds for mergers and acquisitions, aims to raise its ranking in key markets to reach its goal of becoming a global top 5 game company by 2020, Netmarble founder Bang Jun-hyuk told Reuters in January.

The company received Korean exchange approval for an IPO in December 2016. JP Morgan and NH Investment & Securities are advising the IPO.

Tencent owned a 22.2 percent stake in Netmarble as of end-2016.

Samsung BioLogics Co Ltd's (>> Samsung Biologics Co Ltd) IPO raised 2.25 trillion won in November 2016, in South Korea's second-largest ever listing.

($1 = 1,132.6200 won)

(Reporting by Changho Lee; Writing by Joyce Lee; Editing by Muralikumar Anantharaman)