Few years ago we started to rebuild eAdventure with the same spirit: 1) low technical knowledge to use the tool, 2) Interoperability, 3) Open Source philosophy; but trying to address the technical debt and platform limitations we had with eAdventure. If you were interested in eAdventure, please have a look to uAdventure.
The eAdventure platform is a free and open source game framework based on Java, with an emphasis on educational uses. eAdventure uses a declarative XML language to create educational adventure games, both in first and third person.
The platform consists of two tools: the eAdventure Editor, a easy-to-use visual tool to create eAdventure games, and the eAdventure Engine, a game engine able to run those games.
This GitHub project hosts the new version of eAdventure (2.0 version), which provides a completely new code base to provide support for many new features.
You can dowlonad the latest release of eAdventure from here.