Marvel Civil War Skirmish is a miniatures-and-cards game based on the airport battle in Captain America: Civil War. It is played on a checkers or other 8×8 board.
superheroes
Knight Models’ Marvel Universe Rulebook
Knight Models offers its Marvel Universe Rulebook free for the downloading.
Godlike Open Source Rules
Godlike – Open Source Rules is a conversion of the WWII Superhero RPG to the familiar d20 type system.
The Cauldron Fan Expansion For Sentinels of the Multiverse
The Cauldron is a fan-created expansion for the popular (and very good) commercial game, Sentinels of the Multiverse.