Differences Challenge

Here's a fairly simple challenge-- spotting differences. In this instance, here's two versions of an image. You may ask your readers to spot which characters change in some way from one to another. You can posts links assigned to each character in the picture. Correct answers lead to blogs, incorrect to "wrong answer" pages...

• Adam Strange
• Rising Sun
• Red Tornado
• Captain Comet
• Starman
• Man-Bat
• Swamp Thing
• Clark Kent
• Green Arrow
• Phantom Stranger
• Deadman
• Wonder Woman
• Hawkman
• The Flash
• Supergirl
• The Metal Men
• The Joker

All of the links to characters that had been altered lead to "correct answer" pages, or in this example, related blogs. All of the incorrect answers in this example lead to the same "error" page, but during the actual crossover, would be individual "wrong answer" pages.