Volksgrenadier

The game includes a number of ships that you can play. The fun part is that you can choose which nation to grind and be able to unlock all the ships for that specific nation without being locked from the opportunity of farming other nation's ships. Not only is the game itself challenging and informative, the World Of Warships community also made a channel supporting veterans and explaining history. If that isn't a reason to support it, I don't know what is. I highly recommend to at least try it out.