Planned Release Date: July 2025

About This Game

THE MULTIPLAYER OVERHAUL HALF-LIFE NEEDED

Welcome to the chaos of Cross Product Multiplayer (ZAMNHLMP); a fast-paced multiplayer which blends familiar mechanics from Half-Life with new challenges and advantages, with more and more coming each year with our annual season updates. Based on open-source technologies, ZAMNHLMP is welcoming for familiars and casual players alike.

DYNAMIC GAMEMODES

Choose from a variety of gamemodes to keep every match fresh and engaging.

OPPOSING FORCE WEAPONS

Slash your enemies more diversely with the Displacer, M249 SAW, or the Sniper Rifle!

EXPANSIVE & EXCLUSIVE MAP SELECTION

You can battle across the extensive collection of maps created and curated by ourselves, as well as iconic maps such as Crossfire, Datacore, and more, which have been refined and improved. All of the Half-Life 1 and Opposing Force multiplayer maps can be found here, alongside a selection of community classics.

ADVANCED MOVEMENT MECHANICS

Master bunny-hopping if you dare - you might just need it to save your life.

EXTENSIVE CUSTOMIZATION

Fine-tune your experience with adjustable settings, such as field of view, weapon viewmodel offsets, and much more.

COMPETITIVE GAMEPLAY

Inspired by classic Half-Life Deathmatch and arena-shooter culture from 1998-2002, with enhancements suited for adrenaline-pumping fights.

CONSTANTLY EVOLING, YEAR BY YEAR

Originally conceived as "creaTive Deathmatch" in 2019, the project evolved into "Shooter Tourneys" and ultimately "Codename ZAMNHLMP," furthermore known as Cross Product Multiplayer. Ever since 2021, we've been expanding and evolving this game with our annual yearly Season updates, where we are currently at Season 9: White Sands. We've built this game upon open-source technologies, and we've left the SDK open as a thank you to the GoldSource Developer Community, and so you can have a tinker around with it yourself.

Mature Content Description

The developers describe the content like this:

As with Half-Life 1, certain players and characters can be "gibbed" with enough damage, where the game depicts the character's body parts exploding. However, the graphics and visuals are dated.