I have just uploaded web demos of Afterburn 2150, Block Rockin, and Mars Defender.
Afterburn hasn’t been mentioned here before – it’s a 3D shoot-em-up that takes you on a tour of the solar system while blasting the baddies. This is an early demo of it.
The main reason I have posted these is that I have started teaching an undergrad class using Shiva, and these games provide perfect examples of game development features that I will want to discuss and illustrate.
I’ve had a bit of fun figuring out the Facebook developers API and integrating it into Block Rockin’. The game is now running as a Facebook app. The key social feature here is that the high scores table no longer reflects the scores of people using the same physical device, but is now constructed from your Facebook friends.
The game isn’t as ‘nice’ when played using the arrow keys rather than tilt sensors, however.
Here’s a youtube video that Kirsty has just completed:
Block Rockin’ is now available in the App. Store 
I’m still toying with how best to release it for Android – from what I read, piracy is a serious problem on that platform, so we might have to embed adverts in it.
I approached Anthony, a long-term Darkwind player with a talent for texturing vehicles, to see if he’d like to get involved as the texture artist in Block Rockin’. So now there’s a team of two 
We’re working on a number of themes (Neolithic, Circus, Deep Space, etc.) and therefore different textures for all of the game objects for each of these themes. I have also purchased some music from the excellent Shockwave Sound archive. It turns out streaming music on the iPhone is quite a drain on its puny resources however, so we’re stuck with 30-second song loops.