Your code looks okay. When I went to the page, it set three cookies for me. Try turning on cookie notification if your browser supports it. (Some show only the name and value, but some (IE I believe is one) show all the details) The best domain to set it to in your case is "thegamepage.tripod.com" (no leading period)

The browser, when it loads your page, looks at all of it's cookies, and then uses the domain to figure out whether or not to send each one. If it is sent, the web server reads it into the environment variables, which perl accesses through the hash %ENV. Just some background...