Developer 
Features Quyền Sách Hoàng Kim, also listed as Book of Gold, is a slot game from JILI Games set in a desert-themed search for a lost book. The demo version lets players play for free and practice before playing for real money while reviewing the core mechanics, including the main symbol set and prize features.
The game description highlights the gold symbol as a central feature, alongside general link prizes. An expanded WILD is also part of the design, supporting larger winning combinations across the board and shaping the bonus structure around full-screen outcomes.
For players looking for a free demo slot, this page presents the game as a chance to study how the special symbols, link prizes, and expanded WILD function in the base game and bonus rounds before using real stakes.
