In the 1970s Tomy manufactured a range of puzzle games contained within a plastic see-through tank filled with water. The object was to complete challenges against the physical behaviours of water. I remember the ones we had as being difficult to play but very satisfying once completed. Titles included Triangles, Ring Toss, Starball, Soccer, Basketball and even well-known games adapted especially such as Hungry Hippos and Pac-Man.
The 1979 French advert below shows four examples of the ‘Faszination’ range which were licensed by Tomy in many parts of Europe.

France. Pif Gadget. 1979.
GREAT !! You can see more Tomy water games :
http://tomywatergames.blogspot.fr
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That’s a great site, thanks for the link!
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