Crossover Earth '98
A superhero PBEM with a slightly different slant. Each player has two characters, a hero and a villain. Heroes defend the world and generally respond to the actions of villains. Villains plot behind the scenes and create much of the subterfuge and double-dealing happening in the world. Each turn's results are chronicled in the Crossover Earth Gazette by player written stories.
G.H.O.S.T.-Net
Information for the New Minute-Men Play-By-e-Mail. History, writeups, and description for GHOST, the Govt agency. ~30 PBEM turns.
Star Trek: Future Champions
The future DC Comics Universe intertwined with the Star Trek universe. Superheroes and Starships.
The Global Guardians PBEM
In 2026, a United Nations sponsored team of superheroes based in Austin, Texas. 11 detailed writeups, campaign background, useful general Champions playing notes.