This is the caveat given as Botwood prepares to show off PDZ for the first time. Running on alpha Xbox 360 development kits (machines that possess only two of the three CPU cores in the final spec, as well as a run-of-the-mill ATI graphics card as opposed to the final, custom GPU set), the game is still very much a work-in-progress. But even at this stage, it's enough to see where they want to go with it.
This is a multiplayer-only demonstration. Taking a cue from Bungie, Rare remains tight-lipped regarding the details of Joanna Dark's single-player adventure. Other than vague descriptions of the plot ("Its general overview is how Joanna came to be the world's perfect agent"), promises of high-replayability ("It's almost like you can play it in an entirely different way each time"), and reluctant hints at a possible co-op mode over Xbox Live ("We were certainly interested to hear that Bungie had it planned for Halo 2 and disappointed to see that they didn't make this kind of game...it's something we're very interested in"), we'll have to wait for the curtain to reveal more.