It seems like these CD-i titles by Philips Professional Publishing were lacking the design rules of commercial CD-i titles by Philips Media, and these two discs, both by Icontact and both published by Philips Professional Publishing, also have the same design. It seems like these discs were only meant for professional use. Both CD-i discs offer the Japanese language, which is pretty unique. Who owns a copy of Golf Tips? It is actually just a reference title offering tips for playing golf, no other element is in the title. On the other hand, Wimbledon Challenge actually offers a quiz game, which makes this title more interesting for us as game collectors ;)
[Credits pictures by Alan_cdizone and Marco Parisio Java, thanks!]