Delta Force: Task Force Dagger is a first-person shooter video game developed by Zombie Studios and published by NovaLogic. It's a stand-alone expansion pack to Delta Force: Land Warrior. It is set in Afghanistan in 2002 after United States invasion of Afghanistan in 2001. Task Force Dagger is based on the same engine as the previous Delta Force title Land Warrior and retains all of its gameplay mechanics. The largest difference is that the player can now choose to control a character from either one of ten available special operation units including SEAL Team Six the Green Berets and the Special Air Service. All of these have individual advantages and disadvantages such as some operatives being formidable snipers while others are able to sustain larger amounts of damage. However mechanically these factions are identical to the different playable Delta Force operatives available in Land Warrior. Unlike the earlier games Task Force Dagger usually sends the player on missions alone without any support from AI-controlled friendly soldiers.