Spearhead Studios supercharges its online slot portfolio with the release of Blue Diamond Book

The ‘Book of’ game catalog of Spearhead Studios is growing by one, after the release of the new online slot game Blue Diamond Book. This high-volatility game provides players with plenty of features on the 5×3 grid with the possibility to win up to 27,000x the bet on a single spin! Enter the Underground Tomb […]

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