Mod Free to play App 1707900

Delta Particles

Yuri Epifantsev · released Dec 20, 2024

Delta Particles – is a total conversion mod for HL. You're playing as a technical engineer of complex "Delta Base" Nick Farrell. Unfortunately, the protagonist was in the wrong place at the wrong time, as an experiment at the Black Mesa Research Facility resulted in a resonance cascade.

StoreSteam store

Data updated 21h ago

Price

Free

US store

Reviews

96%

3,596 · Overwhelmingly Positive

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Product info

from Steam's PICS · read 2d ago

Change number: 40,826,563 · seen 2d ago
Public build: 19,368,661 · Jul 26, 2025 (1y ago)
Operating systems: windows, linux
Architecture: —
Install size: 602 MB · 282 MB download
Install folder: Delta Particles
Controller support: Full
Metacritic: —
Homepage: www.moddb.com/mods/half-life-delta
Release state: released
Community: hub · stats

Steam Deck

Playable

Tested Aug 16, 2025 on build 16,812,629

!Default controller config not fully functional
!Interface text is not legible
✓Default configuration is performant
iExternal controllers not supported primary player

Branches · 3

every build Steam serves for this app

Branch	Build	Updated	Description
public	19,368,661	Jul 26, 2025 · 1y ago
legacy	19,368,608	Jul 26, 2025 · 1y ago	Pre-25th Anniversary Build
v1.2	19,209,756	Jul 13, 2025 · 1y ago	Version 1.2 Build

Build history

every build id we have seen on a branch (history starts with our first read)

Build	Branch	Released	First seen
19,368,661	public	Jul 26, 2025 10:36	3d ago
19,368,608	legacy	Jul 26, 2025 10:28	3d ago
19,209,756	v1.2	Jul 13, 2025 22:33	3d ago

Depots · 7

content of the public branch

Depot	OS	Language	Size	Download	Manifest
1707901	all		391 MB	208 MB	4894674319724506689
1707902	all	russian	30 MB	20 MB	6482994035501611367
1707903	windows		50 MB	17 MB	2317205906928236723
1707904	linux		131 MB	37 MB	332699696800699056
1707905	all	spanish	172 KB	26 KB	4326610607673383714
1707906	all	schinese	49 KB	17 KB	1522673831863798702
1707907	all	brazilian	167 KB	29 KB	2215302769171684124