YouTube calls them "Playables," lightweight games you can play on the company's website or ... The company quietly announced on Monday that it is now testing a multiplayer function for Playables.

All PS Plus subscribers can play these games this whole month.

Co-op has been a staple of gaming for most of the medium's lifespan, although its prominence can ... now is the perfect time to look ahead at what the future holds in terms of free co-op Steam games.