Dreadnought: Invasion Six was published as a four-part comic book series and distributed by Diamond Comics Distributors. Then is was published online as a web comic book series. Now, it has been re-released as an electronic graphic novel on Amazon.com. It can be purchased and downloaded onto the Kindle; or to a tablet or phone that has the Kindle app installed. It's available free to Amazon Prime members! This electronic version includes an epilogue that was not released in the original series. Have fun!
Here is a free sample for you: