from
http://en.wikipedia.org/wiki/The_Shadow_of_Yserbius
In late 2007, the ImagiNation Revival Project succeeded in resurrecting the long-dormant ImagiNation Network by using the original client software coupled with DOSBox. The Shadow of Yserbius is now once again available for online play with all features, graphics, sounds, and such fully intact and functional. Macros are fully supported and compatibility with old character and map files is enabled for TSN/INN versions 2.4 and higher.