If you are hankering for some Shadow of Yserbius action, looks like innrevival might have your fix.
The goal of the project is to create a server architecture that is compatible with the ImagiNation Network client software that you may still have lying around somewhere, forgotten, on a stack of floppies or a CD-ROM. This goal is being pursued by reverse-engineering the client software to determine the network messaging protocol that was used. We have had great success with this process so far, and by watching this site regularly for updates you will be able to keep up with our further progress and see what we have already done.
Looks like you will need to run an original client within DOSBox, but they have shots of a bunch of working pieces already — Boogers, 3d Golf, the Clubhouse…