All of these are available free on Comixology.com by clicking the links in the titles. Enjoy:
Two unassuming auto repair shop owners discover that monsters are infesting the world. When they are attacked, the glowing blue juice from the monster's brain heals his arm and saves Jake's life. But this gift only begins a life-long link to the monster invasion. From the creators of Sci-Fi TV's Lost Room mini-series. Featured on Free Comic Book Day 2009.
"F@#king great!" - Mark Waid.
The Nationalist Army of China comes to Moth City to purchase a mysterious new weapon to win 1930s civil war, and instead steps into shadowy intrigues as a daughter tries to escape her father, a scientist tries to avoid his death sentence and a dictator tries to control a world falling apart.