Games Like Black Mesa

Half-Life: Opposing Force

Half-Life

Half-Life: Blue Shift

Half-Life 2

Half-Life: Source

Half-Life 2: Deathmatch

Half-Life 2: Lost Coast

Half-Life Deathmatch: Source

Half-Life 2: Episode One

Painkiller: Black Edition

Prospekt

System Shock: Enhanced Edition

Half-Life: Alyx

Hunt Down The Freeman

Blackout Z: Slaughterhouse Edition