If you start KVITLECH 2000 and are prompted with the following window, you need to get a new password.

KVITLECH 2000 is currently free and while I don't anticipate changing this anytime in the near future, you may still be prompted for a new password from time to time. You won't need to enter the new password every time you start the game. Once you enter the password, KVITLECH 2000 will remember it and you shouldn't be bothered again until it expires.

If you are prompted for a new password, check out this page to get the latest one. I will continue posting it here for as long as the game remains free. If for any reason the password posted here doesn't work, you can send us a message here or email kvitlech2000@gvaldig.addr.com.