Team Sandpit


About: A sandbox mod for Half-Life. Spawn and pose monsters and models from GoldSource engine games. Sandpit can automatically mount content from other GoldSource engine games that you own.

Initial Release: 8th December 2008

Sandpit Downloads


About: An open-source multiplayer bot for Half-Life, Half-Life Opposing Force (Deathmatch and Capture The Flag), Day of Defeat (Territorial Control), Gunman Chronicles, Natural Selection (Combat) and They Hunger.
Sandbot also includes support for the Linux versions of Half-Life, Half-Life Opposing Force and Day of Defeat (compiled and tested on Ubuntu) as well as MetaMod support.
Sandbot is based on HPB Bot by Jeffrey 'botman' Broome.

Initial Release: 2nd May 2016

Sandbot Downloads

Zeno Clash Multiplayer

About: Work in progress proper multiplayer for Zeno Clash. Players can use weapons (not all weapons do damage) but currently cannot respawn.

Initial Release: 27th December 2016

Zeno Clash Multiplayer Downloads


About: Extensions and improvements to Valve's Half-Life SDK.

Initial Release: 5th January 2015


About: A GoldSource and Source multitool (formerly known as vmmt) with the following features:

Initial Release: 24th December 2016

gssmt Downloads

Half-Life: Decay cut mission layouts

The info_node entities from Half-Life: Decay's cut ht06hub and ht08hangar missions exported to .map files. Their locations give a rough layout of the cut missions and if you go to View -> Show Connections in Hammer which nodes were within line of sight of each other.

Download Half-Life:Decay cut mission layouts

Zeno Clash model converter

Zeno Clash uses a modified version of the Source engine and one of the changes is to the .vvd format (one of the files that stores model data). This command-line utility will convert a Zeno Clash v5 .vvd file to a Half-Life 2 v4 .vvd file (not all files convert correctly).

Download Zeno Clash model converter