If you ever wanted to play Half-Life, Valve’s debut title, the time is now. Steam is offering Half-Life, the game named Game of the Year by 50 publications, for free until November 20th. And it is yours to keep, even after the free weekend.

In additon to the free game, several other games in franchises have huge discounts this weekend. Some games are up to 90 percent off.

There is also the Half-Life 25th Anverisary Update where fans can game updates, bug fixes, brand new interviews with the HL1 Dev team and new game content. The Update includes Half-Life UpLink (a mini campaign release as a CD exclusive for magazine and hardware manufacture. It also has 4 New Multiplayer Maps, updated Graphic Settings, Controller and Steam Networking Support, Steam Deck Support and restored content. For more information on the Half-Life 25th Anniversary Update www.half-life.com/en/halflife25