Merry Snowballs is currently free on Steam. It is a casual action and sports game where players battle each other with snowballs mostly.
Store Description:
Merry Snowballs is an action packed VR snowball game where you get to relive your childhood snowball fights - this time with the cool gadgets you once wish you had! Battle against the neighborhood kids and fight your way to the top of the global leaderboard.
Link: Welcome to Steam
Expires 31st Jan at 10:00am GMT.
Note: This is a virtual reality (VR) game that requires either HTC Vive, Oculus Rift, or Valve Index to play. You can still add the free game to your library of you don’t have either of these devices right now, in case you do have one in the future.