The latest friendship-ruining co-op game on Steam is a punishing platformer where you're chained to your pals, and it's about to crack 100,000 concurrent players

Like karaoke, escape rooms, and showering, some things are just more fun with friends. Same goes with games: solving puzzles and overcoming obstacles can turn beating a game into a true collaboration, and that's a feeling you just can't get when playing solo.

But every so often a co-op game comes along that feels like it's designed to end your friendships rather than strengthen them. (Overcooked: I'm looking at you.) The latest entry in that category is called Chained Together, a brutally...