Punters will also see. In this slot review, we'll cover the max win, volatility, Return-To-Player (RTP), and other features of this casino game. Punters will also see. . Spearhead Studios announces the release of Royal Crown 2, a new colourful classic-themed videoslot. The game is a 5×3, 5-line videoslot, with an RTP of. In this slot review, we'll cover the max win, volatility, Return-To-Player (RTP), and other features of this casino game. Spearhead Studios announces the release of Royal Crown 2, a new colourful classic-themed videoslot. The game is a 5×3, 5-line videoslot, with an RTP of.