909Game is the developer of King of Jade: Stone Tycoon, a jade-trading management sim published by lvlv and released on Steam on 11 September 2026.

The studio has built a management game around a real trade most Western players have never encountered: jade stone gambling, where buyers bid on uncut rough and only learn what is inside after cutting. That is a genuinely unusual subject for a shop sim, and it supplies a risk mechanic the genre normally has to invent from nothing.

Where to find 909Game

King of Jade: Stone Tycoon is on Steam at $7.19 (10 percent off a $7.99 list price at the time of writing). View the Steam store page.