Greasy Fork is available in English.
How to use: You should see a menu bar on the right side of the screen, hover over it and the menu will slide out! When out click on the buttons shown! This should upgrade your tank automatically! If you don't know what the upgrades do, press [T] twice/once.
A significant flaw exists wherein users are forced to utilize "PasteOnlyUsername." A fix is currently in progress!