Adia-Ond is an experiment/project I started a few months ago. I wanted to see if it was possible to build a full featured MMORPG using only features that are directly available to a late model standard web browser, using no plugins. This is an ongoing project, and I usually add new features/bug fixes every few days or so.

So far, it's a success, though in it's current state it's more of a SERIOUSLY glorified chat engine. There is currently no combat, no story and no name.
It does have the following features though:

• Complete Character generation system, with 5 races and 5 classes
• Large map to explore, complete with towns, keeps and even some dungeons.
• Working Movement engine, allowing players to move around the world, including teleporters in some locations
• Working inter-player communication system, including chat, viewing other players on the map as they move around, inspecting other players, and a "who" list
• Partially working NPC system
• 90% complete inventory and shop system. You can buy items and equip them
• Day/Night, as well as "fog of war" for dungeons
• Bug report system
• Persistent world and auto saves. When you login, your character is right where you left him/her
• Robust set of Admin tools for content management

To check it out, click the screenshot at the top of this page, or the link above. It has been tested recently to work in every major browser, and even a few minor ones, though there will be times when a new feature breaks one browser or another and it takes me time to work around it.