Frontal views and side views of three different German super-heavy tank projects.
As far as I know the projects' names and pictures are correct, but the names 'Tiger III' and 'Panzerkampfwagen VIII' are purely imaginary. The heaviest project got farthest, two prototypes and various parts for a dozen other tanks were produced of the Maus.
Of the second-heaviest project, the E 100, one hull with the suspension was produced, while the Krupp Löwe (Lion) remained a paper project.
That's exactly what I was told at the German tank museum in Munster - and I'd think that those guys know what they're talking about. Anything else belongs in the realm of Nazi flying discs, IMO ...