I thought it a different subject, and didn't want to waylay another thread to start talking about something unrelated to the original topic.
I would think since there is a delay in the arrival of people in the first mission, several minutes apart, that Gantz just grabs whoever he can whenever they die. And he ends up with a dog, and a panda bear, plus a little kid and others, so he can't really tell who he is going to get. Surely this is everyone who died in that time period within a large city like Tokyo, he perhaps just scanning around and whatever he happens upon at the right time he gets. Does he stop when he gets a certain number, or just grab everyone he can within a certain time period?
The number of people is thus determined by how many he can grab. During the first mission, we have Kurono and Kato who died together, and the two Yakuza most likely died together also. It wouldn't make sense that they died separately, at the same time, and just happen to know each other and be in the same line of work. So I believe we can assume they died together.
So does that count as 4 people, or just 2 grabs into an area, he fishing back two for the price of one?
When he hit the area after the massacre, he got a whole lot of people at about the same time, perhaps many in one single grab.
Otherwise he'd just have Izumi machine gun people at a military base, and thus have some stronger soldiers to use.
Of course, since you can bring someone into the room by touching them during transfer, it is a wonder that he didn't just send people out to gather good fighters, those who wanted to hunt, that way.
In Osaka we see a whole lot of people in that room, apparently new and clueless, the alien invasion already underway and the aliens massacring a lot of people, thus where they all came from.
If I wasn't lazy I'd count the number of new people in every mission, as well as the count of how many knew each other before hand and died together. They had two guys in the Temple mission that knew each other. Hmmm.. oh well.
Is there more than one team each Gantz sphere handles, is what I was thinking. What does it do with the rest of its time? You know the guy connected to the machine is playing RTS games online or looking for alien robot porn, or something, but what else is he up to in that black ball?
So, you are saying Nishi hated the game, and wanted to leave, but then why didn't he care about sharing the points in the first mission with the others. He let them kill the first alien, then waited for the second to appear, and even said he was going to let Kurono have the points. Since he was so close to getting a 100, I think if he wanted to go, he'd have been after that.
He could've easily just sniped both from a safe distance with a rifle, and killed off everyone else himself, there no penalty for that.
He insults Gantz, and doesn't care for him perhaps, but he still wants to be there. He likes watching stuff die also. I recall him asking Kurono something that suggested that. Plus he blew up that cat for fun outside a mission using an X gun.
My point is, that I don't think he really wanted to leave that badly.