Entropy : Zero

Entropy : Zero is a singleplayer modification for Half-Life 2. Set within Valve's Half-Life 2 universe, the game explores the plight of a sociopathic cop, stranded in a frozen and blighted city.

 

Entropy : Zero took two years to make and was released in 2017. The game received good reception overall and is held in high regard by the Half-Life 2 modding community.