Heat Reborn is a free massive multiplayer online first-person shooter. Completely re-created the original Heat Project with Source engine. New gameplay elements are being added and re-balance the old days' gameplay by using the Source Engine.

In 2100, Republik Kugelmugel almost takes over the world. It is the largest empire that has almost 5 billion people and affecting all around the world including Europe, America, and Africa. After the 3rd world war, Republik Kugelmugel renamed to Cinor Empire. The capital is located at Yilifu. Cinor is an empire. However, it is a presidential government. Cinor Empire also pursues aristocracy. The people organized a rebel force named Kronoc and it is located in El Provencio. Kronoc hires Asin, which is a biotechnology company, for their genetically modified soldiers to revolt. Afterward, Cinor Empire also hires Asin to fight back.