Addon

Addon or Add-on may refer to:

• Commercial add-ons or expansions for Blood, namely Cryptic Passage and the Plasma Pak (and its new episode "Post Mortem")
• Third-party level packs such as Red Hot or Level Pack 6: Additions for Blood.
• Fan add-ons created by Blood users in MapEdit such as Death Wish or Bloody Pulp Fiction.
• The Nightmare Levels expansion pack for Blood II, the cancelled Blood II: Revelations or even the Blood2K5 mod.