The elements of digital storytelling by Mora Paul and Christina Fiebich are exploring the 'poorly charted territory' of the 'digital frontier'. They see that this 'dynamic new space for storytelling' exists merely as a potential yet. Their enlightening site provides the reader with a theoretical overview to establish a taxonomy, analyse the current practices and quantify the effects. In 'examples' the theory is explained via a lot of very good examples. This showcase of innovative story forms is best understood, after one has taken the time to cruise through the elements.
Gulf War 2 (aka World War 2.5) is such a dynamic design. Be aware, this Flash-game is about war, but once you get past the bangs, the characters and design inspire.