Ultramodern4

Dungeons & Dragons 4E rules in a modern setting.

Categories and types

Tabletop Game (RPG, Retroclone)

Dungeons & Dragons 4E (engine)

Licences

OGL

Website: http://www.diasexmachina.com/

Sources

Details

Doesn't contain a declaration of open game content, but the intention of the publishers appears to be for the entire work to be open.