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Black Bullion: Cash Pool by Netgame Entertainment is a 5-reel, 4-row video slot with 40 paylines and a medium-volatility structure. The game uses a Western oil-field theme, with symbols including cowboy boots, a cactus, a red car, a money case and an oil barrel Wild that can substitute for standard symbols.
The main feature is the Cash Pool system, built around a separate grid of tanker prizes above the reels. Four or more Cash Pool-related symbols can activate the displayed values, while the Golden Cash Pool symbol upgrades the linked tanker to gold. The slot also includes a Free Spins round, triggered by three Bonus symbols on reels 1, 3 and 5.
This review page sits beside the demo version, allowing players to play for free and practice before playing for real money. The published RTP is 96.16%, and the maximum win is listed as x3000.
