I worked as UI Artist on the browser based version of the Silent Hunter game series. Later I became Project Art Lead and was also responsible for managing the art assets that made it into the game including visual support for the flash based 3d engine (setup the different weather and daytime states).
Because of that he project was a real challenge so we had to find some solutions that are both visualy appealing and stable on all different browsers available back in those days. In the end it turned out pretty good I think :)
Unfortunately the servers were shut down almost 2 years ago.