Goblox was an early name under development of ROBLOX .
David Baszucki, and his team eventually decided to go with the name GoBlocks in late 2002/2003 .
In December 12, 2003, Jim Stevens of the ROBLOX Corporation registered a site called "goblox.com" which was going to be the site name, as they were registering with "godaddy.com" .
Of course, the site didn't become GoBlox, and became Dynablocks, and then Roblox.
You can see the earliest crawl of the page Here