Steam's Winter Sale kicks off today, with Epic giving away more games than I play in a year, GOG running its own free promotion, and the Humble Store offering Humble Choice Premium for $6 a month for six months. But if that's not enough for you, Blizzard has one more for you: the hero shooter Overwatch is free to play until January 4.

Overwatch has been made free many times in the past, but usually only on weekends and never for two weeks. The demo version includes access to the full game, including all heroes and modes, and any progress earned (which can be quite a lot, considering how much time you've spent) will carry over to the full game.

Overwatch is also on sale during the trial period: bonus skins for World of Warcraft, Diablo 3, StarCraft 2, and Heroes of the Storm are included, as well as Overwatch-themed cosmetics. Overwatch Legendary Edition" is reduced by half to $20, while the regular edition is reduced to $15, 25% off the regular price of $20.

And if that's not enough for you, Blizzard is also participating in the holiday sale, offering a variety of new games, including "Call of Duty: Black Ops - Cold War," "World of Warcraft," "Diablo 3," "StarCraft," " Hearthstone" card packs and Tavern Passes with discounts of up to 65%.