Single-player Mods
- Afraid of Monsters: Director's Cut – A single-player horror mod. The protagonist is David Leatherhoff, a drug addict who must face his darkest fears; in a nightmare, the player must decide whether it is a drug hallucination or real. It has four different endings.
- Cry of Fear – The successor to the Afraid of Monsters, it puts the player in the shoes of Simon, a paraplegic who writes a book for therapy, and in the process faces the inner demons that plague his thoughts. It features a co-op mode.
- They Hunger – This is a single-player horror-based mod. It was released by Neil Manke's Black Widow Games in three episodes, the first in 1999, the second in 2000, and the final installment in 2001. All three were at one point bundled with PC Gamer magazine.
- USS Darkstar – This mod follows a scientist on a deep-space scientific mission aboard an interstellar spacecraft. When an experiment goes awry, the player has to defend himself against aliens. This mod was featured by the PC Gamer magazine on its demo CD in 2001.
- Wanted! – A Wild West-style mod which follows a town Sheriff and his hunt for a bandit. Enemies include rattlesnakes, Native Americans and other outlaws. It contains original voice acting and era-specific weapons, and was created by Maverick Developments and released as a free mod. For some time it was bundled with the retail version of Counter-Strike, along with another mod by Maverick Developments, Absolute Redemption which was a chapter set between Half-Life and Half-Life 2.
Read more about this topic: List Of Gold Src Engine Mods, Clientside Mods