The edutainment games presented by Germany's beloved children's show host Peter Lustig, published by Terzio.
The tie-in video games to both his TV series Löwenzahn as well as the Swedish Gary Gadget (Mulle Meck) books were elevated by his voice clips and I still quote them regularly. They really put a lot more effort into these games than anything I've ever experienced, there was fucking free DLC for Gary Gadget if you visited their website and had your father put some files in the right folder.
The worlds themselves both star an excentric man tinkering on inventions, but while sometimes fantastical they are more grounded that the world of Peterson and Findus. They teach children about community and physics, similar to the book "the way things work" - guess who presented its animated show of the same name in Germany?