Half-Life: Cross Product Multiplayer
Half-Life: Cross Product Multiplayer - Steam Charts & Historical Stats
The adrenaline-fueled HLDM overhaul you’ve been waiting for. Explore historical player activity and pricing for Half-Life: Cross Product Multiplayer. Player-count data was last observed Apr 22, 2026.
Half-Life: Cross Product Multiplayer player count and price summary
- Current players
- Unavailable
- All-time peak
- Unavailable
- 24-hour player change
- Unavailable
- Current US price
- Price unavailable
Player count last observed . Values marked unavailable are not estimated.
Media gallery 13 screenshots · 2 videos
Screenshots
Videos
2025 Steam Release Trailer
2025 Steam Reveal Trailer
Last Tracked Players
Activity Heatmap
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1 players · 1 samples
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System Requirements
- OS: Windows 10
- Processor: Intel Core i5 6600K / Intel XEON X5680 / AMD A10-7870K
- Memory: 2 GB RAM
- Graphics: ATI Radeon HD 4850 / nVidia GeForce 400
- Network: Broadband Internet connection
- Storage: 2 GB available space
- Additional Notes: The minimum requirements for the Half-Life 1 engine can be ambiguous due to its age; any decent computer running Windows or Linux from at least the early 2010s should work. Additionally, you should use the OpenGL video renderer to play this game; Software mode is not supported.
- OS: Windows 10 22H2
- Memory: 8 GB RAM
- Graphics: AMD Radeon RX570 / nVidia GeForce GT1030
- Network: Broadband Internet connection
- Storage: 4 GB available space
- Additional Notes: As you subscribe to more Steam Workshop Addons, the game will grow in size.
- OS: Ubuntu 12.04
- Processor: Dual-core from Intel or AMD at 2.8 GHz
- Memory: 2 GB RAM
- Graphics: nVidia GeForce 8600 / ATI Radeon HD2600
- Network: Broadband Internet connection
- Storage: 2 GB available space
- Additional Notes: The minimum requirements for the Half-Life 1 engine can be ambiguous due to its age; any decent computer running Windows or Linux from at least the early 2010s should work. Additionally, you should use the OpenGL video renderer to play this game; Software mode is not supported.
- OS: Ubuntu 18.04
- Processor: Intel Core i5 6600K / Intel XEON X5680 / AMD A10-7870K
- Memory: 8 GB RAM
- Network: Broadband Internet connection
- Storage: 4 GB available space
- Additional Notes: As you subscribe to more Steam Workshop Addons, the game will grow in size.
Additional Information
*languages with full audio support
Additional Information
Developer Analytics
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About This Game
The adrenaline-fueled HLDM overhaul you’ve been waiting for. Packed with dynamic modes, extra weapons, refined classic maps, and advanced movement, it’s a fast, customizable, ever-evolving shooter for veterans and newcomers alike.
Detailed Description
SEASON 9: WHITE SANDS
Season 9: White Sands is the biggest Quality-of-Life Update ZAMNHLMP has ever received. With a plethora of bug fixes and enhancements we guarantee you'll have a much better experience than with any previous update, with new content such as the One In the Chamber gamemode, a soundtrack system with more music to come, and new maps. Additionally, we have brought back as a playermodel, Adrian Soares - the ex-protagonist from our first ever title in 2017.
Steam Workshop
Make your dreams come true with the Cross Product Workshop. Create, share, and download maps, gamemodes, playermodels, sounds, and more.
About the 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. Play Capture the Flag, Domination, Snipers, Arcade, or Arena!
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.
CREATE YOUR OWN GAMEMODE
With our in-depth Gamemode & Item Cache System, create your own gamemode based on any of the built-in gametypes.
STEAM CLOUD SUPPORT
On a different computer? Need to reinstall the game? No matter, for Steam Cloud will automatically sync across all of your machines your CTF&DOM definition files, recorded demos, gamemodes, and settings.
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. 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.
THE BACKBONE TO A DEFINITIVE EXPERIENCE
For years, ZAMNHLMP has served as the experimentation playground for Half-Life: Cross Product, our upcoming flagship title with an awesome campaign. As new ways to play get tooled with internally, you'll get to try them out here.
About the 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. Play Capture the Flag, Domination, Snipers, Arcade, or Arena!
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.
CREATE YOUR OWN GAMEMODE
With our in-depth Gamemode & Item Cache System, create your own gamemode based on any of the built-in gametypes.
STEAM CLOUD SUPPORT
On a different computer? Need to reinstall the game? No matter, for Steam Cloud will automatically sync across all of your machines your CTF&DOM definition files, recorded demos, gamemodes, and settings.
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. 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.
THE BACKBONE TO A DEFINITIVE EXPERIENCE
For years, ZAMNHLMP has served as the experimentation playground for Half-Life: Cross Product, our upcoming flagship title with an awesome campaign. As new ways to play get tooled with internally, you'll get to try them out here.