This project has only 3 days to reach its goal - and if you like reading these stories, chances are you'll love the mash up they're doing. Plus, it's going to be available across a variety of platforms. Here's the plot of the first book:

"In an alternative Steampunk universe (c.1885), the plans for Captain Nemo's mysterious Nautilus submarine have been stolen from the British Secret Service. There is only one man who can solve the case, Sherlock Holmes. With his bionic side-kick Doctor Watson, and his brilliant and lethal sister, Mycroft Holmes, Sherlock unravels a mystery that will shake the foundation of the British Empire."

For more info, you can check out the Kickstarter page  http://www.kickstarter.com/projects/369012565/steampunk-holmes-for-the-ipad

Or you can read an interview with one of the creators on The Baker Street Blog  http://www.bakerstreetblog.com/2012/04/decidedly-nautical-appearance-nobl.html 
Here's a look at what to expect: