Replying...
Intro. After dying in an accident, you are transported to an apartment and forced by a black sphere called "Gantz" to participate in a deadly game. In this room new people appear every day, they are given a second chance, to survive, at least as long as they do not kill you. You must hunt and defeat aliens on Earth to gain point, the weakest, they are worth 1 point, and the strongest, 100 points are worth. The points allow you to buy weapons, from basic weapons, which launch shock waves, higher level weapons, such as weapon Z, which performs a circular attack, which hits the objective with an increase in seriousness of 100 times, or even a giant robot, you can buy any weapon or armor, as long as it is a technological weapon. If they do not fulfill the missions, they will die again, and if they die during the mission, their death is permanent, unless one of the other hunters, spent 100 of their points to relive you.

With

@Erick