Gameplay
The goal of the game was to kill an evil elemental creature called En-li-Kil. There were a number of "rooms", where up to 30 (later 60) people could meet and adventure together in groups of up to four. Combat was turn-based.
The available professions were Barbarian, Knight, Ranger, Thief, Cleric, and Wizard. Player races included Human, Orc, Elf, Troll, Dwarf, Gnome, Halfling, and Gremlin.
Another popular pastime was player vs player sparring. This later became corrupted by cheating, as well as version compatibility issues, which later versions tried to address with little success. The most popular of these cheating programs was a macro called VitaminF.
Many players were members of guilds, ranging from the SoF (Soldiers Of Fortune), KoY (Kingdom Of Yserbius), EMPIRE and DEADZ, to guilds such as TheMercs, KoC (Knight of Chivalry), KAAOS (Killing As An Organized Sport), and the FTT (Friendship, Truth, and Trust Guild). While some guilds were based on role playing at times, some of the guilds were dedicated to helping others with interest in the Quests and building strong characters. A handful of the guilds started in Yserbius during the early 1990s, such as SoF, TheCelts, KAAOS (http://www.kaaos.com), DEADZ, TheMercs (http://www.themercs.org), New Outriders (http://www.newoutriders.com ), and the FTT, still exist to this day.
Source of information for gameplay. Detailed walkthrough available at http://www.yserbius.org/forum Source of information for Gameplay Original Manual in PDF form http://www.yserbius.org/download/Yserbius_Manual_Original.pdf
Read more about this topic: The Shadow Of Yserbius