The Playroom VR has been updated with brand new game, and like the rest of them it’s totally free! Toy Wars is a four-player co-op tower defence-style game set in an underground base hidden under a bed. Like many of the other games in Playroom VR it has asynchronous gameplay, in this case the non VR players have to protect the VR player from waves of incoming enemies.
The sea-monster game from Playroom VR is one of my favourites and I do like a tower defence game, so this looks promising.
Source: PS Blog