Virtual Colossus 3D

Colossus was the name of a series of computers developed by British codebreakers in 1943-1945 to help in the cryptanalysis of the Lorenz cipher. After the war, the Colossus computers were destroyed and all plans and information was required to be incinerated.
virtualcolossu... is a fully working, 3D simulation of Colossus, running in just your browser, which you can use to learn how to program the world's first electronic digital computer.
In 1992, Tony Sale and his team began the ambitious task of rebuilding a working Colossus from scraps of information and a few photos - they succeeded and you can see this running for real at The National Museum of Computing in Bletchley Park.
Tony Sale also wrote a virtual version of this amazing machine in 2001, but it's tricky to get running as it was written for a very old version of Internet Explorer.
To honour his memory and to make sure this code and it's story was not lost, in 2016, I rewrote a new Virtual Colossus using current browsers based on his original logic engine code and now, in 2020, a full 3D version you can walk around. My hope is that more people will get to know this incredible story about the first computer.
Music by Tom Gillow - / yipyapyopmusic