DDWN
Dungeons and Dragons Without Number (DDWN) is a reflavoring of Worlds Without Number used as part of the Fantasial Freeze campaign. It is mostly just Worlds Without Number but with scary things replaced with D&D terms (such as "Dash" instead of Run, or "Feat" instead of Foci) in order to trick convince players who tend to be adverse to non-D&D campaigns.