The Si Xiang slot game can be found at casinos offering Iron Dog software. Iron Dog are one of the smaller software providers currently on the market, but the appear to be a subsidiary of the far larger and better established 1x2Gaming. They do not offer a full casino platform, but primarily seem to be used as a bolt on package for extra slots games. Iron Dog do publish the Return to Player (RTP)/House Edge information for their slots games within the game paytable. As such we know that the house edge for Si Xiang is 4%.
Si Xiang consists of 5 reels, 4 symbols high with 28 possible paylines, playing from left to right.
Magic Portal – One of the most useful symbols in the game is the “Magic Portal”. You’ll recognise it as a gold dragon circling a whirl of purple light. The symbol acts as a multiplier, with 3 “Magic Portals” multiplying the win by 75, 4 multiply it by 250 and 5 multiply it by 888. It also helps to trigger the game’s free spin feature.
Wild – The blue and yellow “Ying Yang” is the wild symbol. Wilds can appear at random on the middle reel, sent over from the left-hand side of the reels to replace a pre-existing symbol. Wilds substitute for all other symbols and will multiply any win they contribute to by 3. If the Wild symbol replaces a “Magic Portal” then you will trigger the game’s free spin feature.
Free Spins – You can win up to 100 free spins when the free spin feature is triggered. When this happens you will randomly unlock one of the four expanding wilds described here:
Azure Dragon – The “Azure Dragon” expands vertically and fills 3 symbols worth on the reels, acting as a wild for the duration of the free spins. With each spin the “Azure Dragon” will move randomly to the left or to the right and more than one “Azure Dragon” can appear on the reels.
White Tiger – The “White Tiger” expands horizontally and fills 3 symbols worth on the reels, acting as a wild for the duration of the free spins. With each spin the “White Tiger” will move randomly up or down and more than one “White Tiger” can appear on the reels.
Black Tortoise – The “Black Tortoise” expands to fill 4 spaces on the reels in a 2×2 formation, acting as a wild for the duration of the free spins. With each spin the “Black Tortoise” will move randomly in any direction. There can be more than one “Black Tortoise” on the reels at any time, but once they have moved off the reels the free spins will end.
Vermillion Bird – The “Vermillion Bird” expands to form vertical and horizontal lines of three symbols that interest in the middle, creating a cross and filling 5 spaces on the reels. The symbols will act as wild and the free spins will end when the “Vermillion Bird” moves off the reels. More than one “Vermillion Bird” can appear on the reels during the free spins feature.