A Minnesota man working on a fixer-upper tore down a wall and found, among the newspapers stuffed inside to insulate it, a copy of Action Comics No. 1. That's right, Superman's first appearance. The birth of superhero comics. It'll go for at least $100,000—but it could have sold for a lot more. » 5/25/13 2:00pm 5/25/13 2:00pm

About a month ago, renewed interest in the "Sega Pluto"—a prototype console that was more or less an online-enabled Sega Saturn—led one guy to rummage through his closet and find he was in possession of one of two surviving units. He put it up for bid, but a second auction has ended without his reserve price being met. » 5/11/13 4:00pm 5/11/13 4:00pm

Only two Sega Plutos ever were made—it was a prototype console made in the late 1990s—and the owner of this one just put it up for auction on GameGavel. High bid is currently $7,600. » 4/21/13 11:00am 4/21/13 11:00am

Did you know that the Sega Genesis (nee Mega Drive) version of Alexey Pajitnov's Tetris is exceedingly rare? That there are reportedly only about ten copies of this cartridge in the wild? Then you're probably not in the market for a million dollar copy of Tetris. » 7/18/11 8:00pm 7/18/11 8:00pm

We've dealt with factory sealed Nintendo rarities two decades old this past week, but at least their contents wouldn't throw you into gastric distress. A 22-year-old unopened "Nintendo Cereal System" box just sold for $207.50, or $103.75 per cereal. » 2/21/10 6:30pm 2/21/10 6:30pm