You found the old website, or at least the testing domain.
To keep you interested, and because you were enthusiastic enough to visit this old domain, read below.
A GodoBlocks 2003 recreation is right around the corner, and is expected to release later this year.
Here are quick sneak peeks below:
Image of the early development, built off of the existing 2005 recreation.
Image taken a while after, you can see a lot of progress has been made.
There is no guarantee it will come this year or if it will ever be completed, but just know that it is being worked on.
GodoBlocks is not affiliated with the Roblox Corporation or the Godot Engine. GodoBlocks is not made for profit. Anyone trying to sell this software or is passing it off as an "authentic" 2005 Roblox client is a scammer and should be reported.