Amazon is offering the Superman Adventures #1 Digital Comic Book for Kindle for FREE (regularly 99-cents) for a limited time. Comixology also has it for FREE for a limited time.

Lex Luthor develops a decoy Superman with powers mimicking those of his arch-rival, and sets him loose to attack the world and sully the real Superman’s name. Superman faces impossible odds when he goes power-to-power against the Man of Steel!

Amazon also has the Batman: Gotham Adventures #1 for Kindle for FREE (regularly 99-cents) for a limited time. Comixology also has it for FREE for a limited time.

There’s a bounty out on the Clown Prince of Crime, and there’s no shortage of people trying to claim it. The only place Batman can keep his nemesis safe is the Batcave, but even that haven may not be safe enough when the Riddler comes calling.