Convertible to Add-A-Ball. The 4-player version is Gottlieb's 1977 'Jungle Queen'. Gottlieb Domestic & Export Sales Sheets for Jungle Princess: 1600 total Domestic Sales: 913 Export Sales: 687 The above total does not include 139 Sample games produced in 1977 per handwritten documentation identified by Wayne Neyens as coming from Bob Malvasio, a draftsman for Gottlieb whose initials RHM can be found on schematics. Price to operator: $1145 FOB Chicago, per newsletter from authorized distributor dated August 1977.