When trying to remember the nature of the Heart Games, I remembered one story arc that I thought it was from Alice in Borderland, but it looks like I was mistaken.
It was set in a collapsing tunnel with two buses, and water slowly rising, and then there were alligators released. Among the 'participants', there was somebody who was some kind disabled, so the others leave them (and some who stays with the disabled) to their seemly impending doom. Bottom line, there was actually a way for all of them to survive it without sacrificing anyone.
But apparently that's not the nature of AiB Hearts game; it was the opposite.
Anyone knows which manga has such a scene? I'm having problem remembering it.