That's the beauty of simulation games. There are a lot of things to simulate in real life, hence the variety in this genre. Consequently, there are so many of them that some are bound to be free ...

Valve Corporation have made Half-Life 2 available totally free on Steam this weekend as part of the game's 20th Anniversary ...

Half-Life 2 has been given a major update for its 20th anniversary, making it temporarily free to own, giving it built in mod ...

This content was made free to claim until November 18. For other contents of The Orange Box bundle ... Lost Coast and has now ...

To celebrate that Half-Life 2 has turned 20, Valve has made it free to claim and keep for a limited time. Not only that, but ...