He is a co-founder of Xfire, an instant messenger and social networking site for gamers, which was acquired by Viacom for US$102 million in April 2006.

In his playing career his highest profile victory came in 1997 at the Red Annihilation Quake tournament, where he placed first and won id Software CEO John Carmack's Ferrari 328.

[4] Fong attended the Microsoft-sponsored Doom tournament Judgment Day 1995 in Seattle and defeated Ted "Merlock" Peterson to finish first among 24 competitors from across the US and United Kingdom.

While running GX Media, Fong was also editor-in-chief at the video gaming site FiringSquad, wrote a monthly column in the popular PC Gamer magazine and co-authored the official Quake II strategy guide with Jonathan Mendoza and Kenn Spear Hwang.

[12] GX Media spun off Lithium Technologies, a leading Social CRM platform provider that counts AT&T, PlayStation, Verizon, Comcast and Best Buy as some of its customers.

Fong went on to co-found Xfire, an instant messaging client designed for online gaming, that was acquired by Viacom in April 2006 for US$102 million.

In May 2021, Fong backed Bright Star Studios in a $2 million investment deal for the company's massively multiplayer online sandbox game Ember Sword.

[15] In 1 on 1 deathmatch, he made it a priority to understand the level and "control" vital items using timed runs to repeatedly hoard them from opponents, such as the rocket launcher and armor in Quake.