These can be simple Zen gardens or games that include fireworks, sushi or other aspects of Asian culture. The reason for this is almost certainly due to the number of Asian gamblers who often appear in Las Vegas, Macau and other popular gambling hotspots.
For those who don't realize it, the Fire Pearl is a 5-reel video slot with an Asian theme. The game is unique in that it allows the punter to have the opportunity to choose its volatility, and the game can be set to a maximum of 100 paylines. The symbols of the game include various Asian symbols (sorry, I don't know if they are Chinese or Japanese), boats, temples, walls, bridges and crazy spinning balls. The other symbol is the Fire Pearl Symbol, which is used as the game's Wild. Functionally sensible games include the Wild Symbols mentioned above as well as Free Spins and Roaming Win Multipliers. They will be activated when there are enough Fire Pearl symbols on the screen. Players can then choose from five different rewards, each of which includes a free spin to win the multiplication Wilds.