Tanki Online test server-2015 --NO CODE- free- - YouTube

You dont need any code to enter test server just visit this link
http://test2.tankionline.com/
just try several servers and it will open
p.s.
you have to create account it will ask u for that :D cheers!

exp is /addscore 99999
crystal is /addcry 999999999

you have to play game and then enter code :)