You can play the Half-Life series for free on Steam, though only until the latest game in the franchise, Alyx, is released.
The game publisher, Valve, said the promo was in celebration of the upcoming game and that the earlier games would be free until March, so users can catch up with the story.
“Half-Life: Alyx is set before the events of Half-Life 2 and its episodes, but the games share characters and story elements. The Alyx team believes that the best way to enjoy the new game is to play through the old ones, especially Half-Life 2 and the episodes, so we want to make that as easy as possible,” it explained on the Half-Life game page.
The promo covers Half-Life (including Blue Shift and Opposing Force), Half-Life 2 (including Episode One and Two), and Team Fortress Classic.
To play the games, users will have to install Steam first before downloading the individual titles.
Alternatively, users can buy the entire bundle at a 40 per cent discount for RM88.20 (S$30), down from RM147.