Both are a survival drama. It's that in Night has come Mafia game is being played among school students in their youth time in going to a school trip but in Squid game there are elderly people teenager who are here in need of money and are playing various games where if any of them loose they are gonna die. So, I recommend watching both also squid will have a season 2 which most of the people know by now I guess but it's for those who haven't watched Squid game yet and who doesn't know there will be squid game season 2/

Duty after school is about a butterfly kind of animal which kills people and this drama is about zombie who makes others zombie which is similar