
Episode #1.6 - S1-E6
Other mistake: Kang-bae is alone in the locker room practising his dance moves until he sees Yeo-rin in the mirror. He turns around and sees that Jin-dong standing right next to him, but Jin-dong was never heard opening the door and walking through it, nor was he heard walking up to Kang-bae. (00:28:30)

Other mistake: Jesus leaves his home with a double barrel break-action shotgun and an ammunition belt holding extra shot-shells. In the next scene Jesus is walking in the street with the shotgun and no ammunition belt, it magically vanished. The shotgun only has a capacity for 2 shot-shells, then it needs to be reloaded, or it can be reloaded after one is only fired, that procedure is called a top-off. He fires 1 round at the mayor and two inside Elena's home which makes three. He never reloads. (00:32:50 - 00:34:40)

Episode #1.7 - S1-E7
Other mistake: Surveillance cameras are shown on monitors when the mass panic kicks in even though any chip-dependent electronics shouldn't work in the game world (previously stated by Chotu). (00:08:20)