STEP 1
You will be prompted with a login screen.
Press the "Register" button in the login screen.
STEP 2
Fill in the form with your desired user name, password and email address.
Press the "Register" button to complete the registration.
STEP 3
Now that you have created a TANK@WAR account and have automatically logged in, you can select one of the servers in the server list to play on.
Next time you start the game you can enter your chosen user name & password combination to login.
You can also check the box "Auto login" to login automatically when booting up the game.
Now it just needs more players!
it still doesnt work! it needs to be updated probably OR when desura intstalled the game it messed up
Still not working a year later. I don't even see a register screen, but I do get the client running. Running Debian Jessie.