the Nashorn in War Thunder is a german tank Destroyer that has the same cannon as the King Tiger! The only problem is, it doesn't have the same armour and of course the crew are completely exposed!
Since overpressure was added to War Thunder this poor thing has been moved down in battle rating to a place where there are even more fighters and even more quick reloading tanks that the 88mm cannon sometimes completely overpenetrates.
HE will send you straight back to the hanger as will heat-fs. If a plane so much as sneezes in your general direction you're done!
BUT… when you get to the right spot, the cannon is a LOT of fun! 🙂