2048th - the year in which humanity faced with bio-terrorism. The desire to reach the next stage of evolution, contrary to the truth of nature, formed the study on the illegal modification of human cells. Because of this special unit was formed by mercenaries, who opposed human experimentation. One of the major terrorist groups, hiding a secret base in the jungle starts the project “Confluence”, combining plant cells with human. A group of scientists dealing with an experimental process raises an army of soulless bio-soldiers that guard the project. But during the final experiment “Confluence” gets out of control and begins to embrace everything around. You, as one of the best mercenaries will have to stop the project by one single way - break in its epicenter and blast it.

The game takes its roots from the classic first-person shooter - a series of games Wolfenstein 3D, Spear Of Destiny, Operation Bodycount, Blake Stone and others. The color palette is taken from Operation Bodycount, while the game uses a unique graphical style, approximate to Wolfenstein 3D. In Merger 3D you’ll pass a long levels, breaking through the crowds of enemies.