Since I don't know the details of 'kanpeki game story', I can't say who the main characters are.
I'm not sure specifically what 'kanpeki game story' is about without more context. It could be a story related to a perfect game in some context, like a perfect sports game or a game in a fictional world where everything goes ideally.
Since we don't know the details of the 'deadliest game story', the main characters could be anyone really. They could be ordinary people who are randomly selected to take part in this game. Or they could be a special group of people with unique skills or abilities that make them either targets or strong contenders in the game. For instance, they could be soldiers who are used to facing danger, or they could be civilians with extraordinary intelligence that helps them in the game.
There's no way to accurately determine the main characters without more context. However, some possibilities could be a group of rebels fighting against an evil empire and the story is set during the strategic time of dusk for their operations. Another could be a solitary detective who gets his most important cases during the mysterious time of dusk and he is the central character trying to solve the crimes.
In the Phantom 2040 game story, the most important character is of course the Phantom himself. He is the hero who takes on all the challenges. Then there are the villains, who are trying to take over the world or cause chaos. There could also be some characters who are on the fence, not clearly good or bad at first, and the Phantom has to figure out how to deal with them. His friends or allies, if there are any, would also be part of the main characters as they help him in his quests.
There's no way to be certain without more details about the 'dating game story'. However, it could be that the main characters are those who are at a crossroads in their love lives. For example, someone who has just come out of a long - term relationship and is now navigating the dating world again, and the people they encounter, such as potential dates, matchmakers, or old flames who resurface, all of whom play important roles in the story.
There could be a protagonist who has some special connection to eyes, like they have a unique eye color or some kind of vision problem that becomes relevant in the game. Alongside them, there might be an antagonist who tries to disrupt the game for their own purposes. There could also be side characters like the protagonist's family members who play a role in the backstory or the setting of the game, for example, if the game is set in the protagonist's hometown, their family could be part of the local lore related to the eye game.
Most likely the dwarves themselves are the main characters. There could be a leader among them, a brave dwarf with exceptional skills.
As I don't know the 'immortality game story' well, it's hard to say who the main characters are. But generally in a game - related story, there could be a brave player as the protagonist.
In the Petscop game story, Paul is a significant character as he is the one navigating the game world. There are also other characters that appear to be children or at least have a child - like appearance. They seem to be trapped in this strange Petscop world and Paul is trying to figure out what's going on with them. But overall, most of the characters' true natures are veiled in mystery.
There's no way to determine the main characters without more details about this 'observation game 2019 story'. It could be a single protagonist who is on a journey of discovery through observation, or it could be a group of characters working together towards an observational goal.