Gamble With Your Friends is Steam's latest friendslop hit

Gamble With Your Friends sold over 1 million copies on Steam in just one week after launching May 1.

The low-cost, six-player casino co-op game spread quickly thanks to short sessions, streamer appeal, and online buzz.

Its breakout success highlights how simple “friendslop” games can still be a major sales force on Steam.

The hit also shows that viral co-op titles can rival much bigger releases in commercial impact.