Zombies will enter the map through a wave system. The maps with survival modes are named with 'nms' before the name of the map. Unlike objective mode, there's no objectives that you need to follow. Survival mode is another mode in a map where you need to survive and protect the zones until the rescue arrives. Here are the good examples of objective maps: The maps with objective modes are named with 'nmo' before the name of the map. Most of the official maps have objectives that needs you to get some IMPORTANT things around the map. Objective mode is a mode in a map where you need to accomplish all of the objectives given in the map in order for you to be extracted. There are two kinds of official game modes in NMRIH that are present in every official map.
