This free promotional preview serves as a pilot introduction to the landmark Marvel Comics vs. DC crossover event. The issue establishes the premise of the two universes colliding and, for the first time in a major crossover, introduces a fan-voting mechanism that allowed readers to determine the outcomes of featured character battles. Official ballots were included, and millions of fans reportedly participated. The results of the voting were honored by both publishers and directly influenced the outcomes depicted in the subsequent issues of the event.