The Green Machine Deluxe: Racking Up Riches (High 5 Games) - RTP 96%; Monopoly Lunar New Year (SG Digital) - RTP %; Mermaid's Fortune. The Green Machine Deluxe: Racking Up Riches (High 5 Games) - RTP 96%; Monopoly Lunar New Year (SG Digital) - RTP %; Mermaid's Fortune (AGS) - RTP My job for the past many years has involved writing the software that runs casino slot machines and their back end systems (player's club. The 10 years old worldwide land-based hit comes again in a complete new gameplay mechanic! Based on Racking Up Riches, where same symbol clusters get formed. . The Green Machine Deluxe: Racking Up Riches (High 5 Games) - RTP 96%; Monopoly Lunar New Year (SG Digital) - RTP %; Mermaid's Fortune (AGS) - RTP My job for the past many years has involved writing the software that runs casino slot machines and their back end systems (player's club. The 10 years old worldwide land-based hit comes again in a complete new gameplay mechanic! Based on Racking Up Riches, where same symbol clusters get formed.