This monster artilleary piece was designed off of the Tiger II Chassis but instead of the famous "88" mounted, it uses a massive 30cm howitzer, none were known to have been built but it's effectiveness would have probably been limited as Tiger II's were already barely being produced so trying to create various versions of it was impractical, aswell as it's size it's taller than a standard Tiger II and the fact that it has a 30cm howtizer it's probably really slow on any terrain that isn't level, on top of all this ammuntion would've have been limited as it was a huge gun and due to this massive gun thier would've been huge puffs of flame and smoke making easy target for aircraft, ultimaetly this would've been another one of Nazi Germanys' impratical super weapons ( W-S forward reverse Q-E Traverse left to right activator 1 for headlamps, trim to move barrell cover, VTOL to raise and lower main gun)