diff --git a/Documentation/opensource-mods.md b/Documentation/opensource-mods.md
index 04284c22..261c8207 100644
--- a/Documentation/opensource-mods.md
+++ b/Documentation/opensource-mods.md
@@ -38,6 +38,9 @@ Uploaded to github by Oleg Cherkasky - https://github.com/gunrunners-paradise/Ct
 ## Deathmatch Classic
 Available in Valve's Half-Life repository - https://github.com/ValveSoftware/halflife/tree/master/dmc
 
+## Delta Particles
+Available on ModDB - https://www.moddb.com/mods/half-life-delta/downloads/delta-particles-full-sources-maps-and-c-code
+
 ## Earth Special Forces
 Alpha 2.0 - https://www.gamers-desire.de/details/2830