diff --git a/binaries/data/mods/_test.mods/config/moda.cfg b/binaries/data/mods/_test.mods/config/moda.cfg
new file mode 100644
index 0000000000..c8951f4c03
--- /dev/null
+++ b/binaries/data/mods/_test.mods/config/moda.cfg
@@ -0,0 +1,2 @@
+a = 10
+atext = "dummy"
diff --git a/binaries/data/mods/_test.mods/config/modb.cfg b/binaries/data/mods/_test.mods/config/modb.cfg
new file mode 100644
index 0000000000..d75c427e1b
--- /dev/null
+++ b/binaries/data/mods/_test.mods/config/modb.cfg
@@ -0,0 +1 @@
+b = 10
diff --git a/binaries/data/mods/_test.mods/config/modreplace.cfg b/binaries/data/mods/_test.mods/config/modreplace.cfg
new file mode 100644
index 0000000000..4c1cc9cf9b
--- /dev/null
+++ b/binaries/data/mods/_test.mods/config/modreplace.cfg
@@ -0,0 +1,7 @@
+a = 8
+atext = "dummyreplaced"
+b = 8
+c = 8
+
+[scoped]
+e = 8
diff --git a/binaries/data/mods/_test.mods/config/modscoped.cfg b/binaries/data/mods/_test.mods/config/modscoped.cfg
new file mode 100644
index 0000000000..46227d1af8
--- /dev/null
+++ b/binaries/data/mods/_test.mods/config/modscoped.cfg
@@ -0,0 +1,2 @@
+[scoped]
+e = 10
diff --git a/binaries/data/mods/_test.mods/config/start.cfg b/binaries/data/mods/_test.mods/config/start.cfg
new file mode 100644
index 0000000000..4b26cb81b8
--- /dev/null
+++ b/binaries/data/mods/_test.mods/config/start.cfg
@@ -0,0 +1,8 @@
+a = 1
+b = 2
+c = 3
+d = 4
+
+[scoped]
+e = 5
+f = 6
diff --git a/source/ps/ConfigDB.cpp b/source/ps/ConfigDB.cpp
index 8896f515b5..b117b922b1 100644
--- a/source/ps/ConfigDB.cpp
+++ b/source/ps/ConfigDB.cpp
@@ -310,6 +310,9 @@ bool CConfigDB::Reload(EConfigNamespace ns)
 	}
 
 	TConfigMap newMap;
+	if (ns == CFG_MOD)
+		newMap.swap(m_Map[CFG_MOD]);
+
 	char *filebuf = (char*)buffer.get();
 	char *filebufend = filebuf+buflen;
 
diff --git a/source/ps/GameSetup/GameSetup.cpp b/source/ps/GameSetup/GameSetup.cpp
index cfb97b42ae..6c3c9ce459 100644
--- a/source/ps/GameSetup/GameSetup.cpp
+++ b/source/ps/GameSetup/GameSetup.cpp
@@ -151,6 +151,14 @@ void MountMods(const Paths& paths, const std::vector<CStr>& mods)
 			g_VFS->Mount(L"", modPath / modName / "", baseFlags, priority);
 		else
 			g_VFS->Mount(L"", modUserPath / modName / "", userFlags, priority);
+
+		// If mod have a config/<modName>.cfg, load the configuration.
+		VfsPath modConfigPath{fmt::format("config/{}.cfg", mods[i].c_str())};
+		if (!VfsFileExists(modConfigPath))
+			continue;
+
+		g_ConfigDB.SetConfigFile(CFG_MOD, modConfigPath);
+		g_ConfigDB.Reload(CFG_MOD);
 	}
 
 	// Mount the user mod last. In dev copy, mount it with a low priority. Otherwise, make it writable.
diff --git a/source/ps/tests/test_ConfigDB.h b/source/ps/tests/test_ConfigDB.h
index d7b7c666b6..36769d0728 100644
--- a/source/ps/tests/test_ConfigDB.h
+++ b/source/ps/tests/test_ConfigDB.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2021 Wildfire Games.
+/* Copyright (C) 2025 Wildfire Games.
  * This file is part of 0 A.D.
  *
  * 0 A.D. is free software: you can redistribute it and/or modify
@@ -32,8 +32,9 @@ public:
 	void setUp()
 	{
 		g_VFS = CreateVfs();
-		TS_ASSERT_OK(g_VFS->Mount(L"config", DataDir() / "_testconfig" / ""));
 
+		TS_ASSERT_OK(g_VFS->Mount(L"", DataDir() / "mods" / "_test.mods" / "", VFS_MOUNT_MUST_EXIST));
+		TS_ASSERT_OK(g_VFS->Mount(L"config", DataDir() / "_testconfig" / "", 0, VFS_MAX_PRIORITY));
 		configDB = std::make_unique<CConfigDB>();
 	}
 
@@ -85,4 +86,56 @@ public:
 			TS_ASSERT_EQUALS(res, 3);
 		}
 	}
+
+	void test_setting_mods()
+	{
+		configDB->SetConfigFile(CFG_DEFAULT, "config/start.cfg");
+		configDB->Reload(CFG_DEFAULT);
+		TS_ASSERT_EQUALS(configDB->Get("a", 0, CFG_MOD), 1);
+		TS_ASSERT_EQUALS(configDB->Get("b", 0, CFG_MOD), 2);
+		TS_ASSERT_EQUALS(configDB->Get("c", 0, CFG_MOD), 3);
+		TS_ASSERT_EQUALS(configDB->Get("d", 0, CFG_MOD), 4);
+		TS_ASSERT_EQUALS(configDB->Get("scoped.e", 0, CFG_MOD), 5);
+		TS_ASSERT_EQUALS(configDB->Get("scoped.f", 0, CFG_MOD), 6);
+
+		configDB->SetConfigFile(CFG_MOD, "config/moda.cfg");
+		configDB->Reload(CFG_MOD);
+		TS_ASSERT_EQUALS(configDB->Get("a", 0, CFG_MOD), 10);
+		TS_ASSERT_EQUALS(configDB->Get("b", 0, CFG_MOD), 2);
+		TS_ASSERT_EQUALS(configDB->Get("c", 0, CFG_MOD), 3);
+		TS_ASSERT_EQUALS(configDB->Get("d", 0, CFG_MOD), 4);
+		TS_ASSERT_EQUALS(configDB->Get("scoped.e", 0, CFG_MOD), 5);
+		TS_ASSERT_EQUALS(configDB->Get("scoped.f", 0, CFG_MOD), 6);
+		TS_ASSERT_EQUALS(configDB->Get("atext", std::string{}, CFG_MOD), "dummy");
+
+		configDB->SetConfigFile(CFG_MOD, "config/modb.cfg");
+		configDB->Reload(CFG_MOD);
+		TS_ASSERT_EQUALS(configDB->Get("a", 0, CFG_MOD), 10);
+		TS_ASSERT_EQUALS(configDB->Get("b", 0, CFG_MOD), 10);
+		TS_ASSERT_EQUALS(configDB->Get("c", 0, CFG_MOD), 3);
+		TS_ASSERT_EQUALS(configDB->Get("d", 0, CFG_MOD), 4);
+		TS_ASSERT_EQUALS(configDB->Get("scoped.e", 0, CFG_MOD), 5);
+		TS_ASSERT_EQUALS(configDB->Get("scoped.f", 0, CFG_MOD), 6);
+		TS_ASSERT_EQUALS(configDB->Get("atext", std::string{}, CFG_MOD), "dummy");
+
+		configDB->SetConfigFile(CFG_MOD, "config/modscoped.cfg");
+		configDB->Reload(CFG_MOD);
+		TS_ASSERT_EQUALS(configDB->Get("a", 0, CFG_MOD), 10);
+		TS_ASSERT_EQUALS(configDB->Get("b", 0, CFG_MOD), 10);
+		TS_ASSERT_EQUALS(configDB->Get("c", 0, CFG_MOD), 3);
+		TS_ASSERT_EQUALS(configDB->Get("d", 0, CFG_MOD), 4);
+		TS_ASSERT_EQUALS(configDB->Get("scoped.e", 0, CFG_MOD), 10);
+		TS_ASSERT_EQUALS(configDB->Get("scoped.f", 0, CFG_MOD), 6);
+		TS_ASSERT_EQUALS(configDB->Get("atext", std::string{}, CFG_MOD), "dummy");
+
+		configDB->SetConfigFile(CFG_MOD, "config/modreplace.cfg");
+		configDB->Reload(CFG_MOD);
+		TS_ASSERT_EQUALS(configDB->Get("a", 0, CFG_MOD), 8);
+		TS_ASSERT_EQUALS(configDB->Get("b", 0, CFG_MOD), 8);
+		TS_ASSERT_EQUALS(configDB->Get("c", 0, CFG_MOD), 8);
+		TS_ASSERT_EQUALS(configDB->Get("d", 0, CFG_MOD), 4);
+		TS_ASSERT_EQUALS(configDB->Get("scoped.e", 0, CFG_MOD), 8);
+		TS_ASSERT_EQUALS(configDB->Get("scoped.f", 0, CFG_MOD), 6);
+		TS_ASSERT_EQUALS(configDB->Get("atext", std::string{}, CFG_MOD), "dummyreplaced");
+	}
 };