
The implications of this round means players are raised to have less recoil at the thought of murder. Such a dire moral stake for what's still the 4th round out of 20 rounds. (In fact, most of the later rounds relatively feels more morally palatable than the 4th round from a humanity standpoint.) And the one who'll have to suffer from this volatile violence most of the surviving players will get is the powerless people in the real world.
The ruthlessness further bred in order to survive only reaches to a point where they themselves become crossed out of the picture. In the previous timelines, the many organized games yielded not a single survivor except one previous individual before Ryu Min. But even then, that person still had a bad ending even after having his wish granted because he didn't meet the requirement of the Game Creator. The thing is, this was a game where the odds of not even a single one winning is very high. The Gods didn't give a hoot at the prospect of a player winning. It didn't even require a winner, the game ends as is and renews another cycle, extinct players be damned just harvest from another human planet. What's a promise of granting a wish if no one will even get to have it? So the truth of the matter was that this was just a game of where all the billions of people are ultimately driven to their deaths to the amusement of the eyes above.
So why make a game? Superficially, It was made for the amusement to most of the Gods, the Game scenario is like a huge gambling ring to them. But the Game Creator God would have a different ulterior motive in mind at the purpose of the Game she created at the request of the other Gods' plan. Game Creator wanted to secretly raise a God killer, using the hidden regression rune she secretly cast inside the game system as the grindstone for the God killler's growth. Once Ryu Min killed an Angel, he met that preliminary criteria.
Ryu Min actually would have successfully completed the Game before the current regression but he was destroyed because of failing to meet the party entry criteria. And if he did, he would've wished for a world back in new years eve without the game system existing. The Game Creator Tampered with the system to intentionally block Ryu Min. The original requirement didn't require any party, it didn't matter if he was solo. The Game Creator had to destroy Ryu Min so that he regresses one last time for a final attempt at making Ryu Min actually grow his powers more because he wasn't yet powerful enough to Kill Divinity. They were all pawns, if Ryu Min fails the Game Creator God's hidden agenda this one last chance, no one is surviving the game. The secret and only chance-of-winning ticket to such a game was the regression stone, without it, you're just guaranteed to be damned sooner or later.
Consequently this allowed him to help his people actually make it to the 20th round this time, even if it meant Ryu Min had to be ruthless.