The Monolith Productions Forums was an online community hosted by Monolith Productions for fans of its games. Although it hosted forums for other Monolith games (such as Shogo: Mobile Armour Division and Claw), the most popular forums were for Blood and Blood II: The Chosen. The site did not host forums for more recent and better selling games such as F.E.A.R. or Condemned 2: Bloodshot. Ever since the Monolith website was "quarantined" following the release of F.E.A.R. 2: Project Origin the forum has also been down. Even with the revival of the website in February 2010 the forums are still unavailable.
- Monolith Productions - the hosts of the forum.
- Transfusion Forums - Blood forum from the Transfusion project.
- The Postmortem - hosts a Blood community forum.
- Blood Line - hosts a Blood community forum.
- Blood Hispano - hosts a Blood community forum.
- DeathMask - hosts a Blood community forum.
- Planet Blood - hosted a Blood community forum.