Index: binaries/data/mods/public/gui/common/functions_utility_loadsave.js
===================================================================
--- binaries/data/mods/public/gui/common/functions_utility_loadsave.js
+++ binaries/data/mods/public/gui/common/functions_utility_loadsave.js
@@ -55,18 +55,35 @@
  */
 function hasSameMods(metadata, engineInfo)
 {
-	if (!metadata.mods || !engineInfo.mods)
+	if (!metadata.mods || !engineInfo.mods || !metadata.mod_versions || !engineInfo.mod_versions)
 		return false;
 
+	let modsA = metadata.mods;
+	let modsB = engineInfo.mods;
+	let versionsA = metadata.mod_versions;
+	let versionsB = engineInfo.mod_versions;
+
 	// Ignore the "user" mod which is loaded for releases but not working-copies
-	let modsA = metadata.mods.filter(mod => mod != "user");
-	let modsB = engineInfo.mods.filter(mod => mod != "user");
+
+	let userIdx = modsA.indexOf("user");
+	if (userIdx != -1)
+	{
+		modsA.splice(userIdx, 1);
+		versionsA.splice(userIdx, 1);
+	}
+
+	userIdx = modsB.indexOf("user");
+	if (userIdx != -1)
+	{
+		modsB.splice(userIdx, 1);
+		versionsB.splice(userIdx, 1);
+	}
 
 	if (modsA.length != modsB.length)
 		return false;
 
 	// Mods must be loaded in the same order
-	return modsA.every((mod, index) => mod == modsB[index]);
+	return modsA.every((mod, index) => mod == modsB[index] && versionsA[index] == versionsB[index]);
 }
 
 function deleteGame()
Index: source/ps/Mod.h
===================================================================
--- source/ps/Mod.h
+++ source/ps/Mod.h
@@ -28,5 +28,6 @@
 namespace Mod
 {
 	JS::Value GetAvailableMods(const ScriptInterface& scriptInterface);
+	std::vector<CStr> GetLoadedModVersions(const ScriptInterface& scriptInterface);
 }
 #endif // INCLUDED_MOD
Index: source/ps/Mod.cpp
===================================================================
--- source/ps/Mod.cpp
+++ source/ps/Mod.cpp
@@ -99,3 +99,22 @@
 
 	return JS::ObjectValue(*obj);
 }
+
+std::vector<CStr> Mod::GetLoadedModVersions(const ScriptInterface& scriptInterface)
+{
+	JSContext* cx = scriptInterface.GetContext();
+	JSAutoRequest rq(cx);
+
+	JS::RootedValue availableMods(cx, GetAvailableMods(scriptInterface));
+
+	std::vector<CStr> modVersions;
+	for (const CStr& mod : g_modsLoaded)
+	{
+		CStr version;
+		JS::RootedValue modData(cx);
+		if (scriptInterface.GetProperty(availableMods, mod.c_str(), &modData))
+			scriptInterface.GetProperty(modData, "version", version);
+		modVersions.push_back(version);
+	}
+	return modVersions;
+}
Index: source/ps/Replay.cpp
===================================================================
--- source/ps/Replay.cpp
+++ source/ps/Replay.cpp
@@ -31,6 +31,7 @@
 #include "ps/Profile.h"
 #include "ps/ProfileViewer.h"
 #include "ps/Pyrogenesis.h"
+#include "ps/Mod.h"
 #include "ps/Util.h"
 #include "ps/VisualReplay.h"
 #include "scriptinterface/ScriptInterface.h"
@@ -59,6 +60,7 @@
 	// Add engine version and currently loaded mods for sanity checks when replaying
 	m_ScriptInterface.SetProperty(attribs, "engine_version", CStr(engine_version));
 	m_ScriptInterface.SetProperty(attribs, "mods", g_modsLoaded);
+	m_ScriptInterface.SetProperty(attribs, "mod_versions", Mod::GetLoadedModVersions(m_ScriptInterface));
 
 	m_Directory = createDateIndexSubdirectory(VisualReplay::GetDirectoryName());
 	debug_printf("Writing replay to %s\n", m_Directory.string8().c_str());
Index: source/ps/SavedGame.cpp
===================================================================
--- source/ps/SavedGame.cpp
+++ source/ps/SavedGame.cpp
@@ -305,6 +305,7 @@
 	scriptInterface.SetProperty(metainfo, "version_minor", SAVED_GAME_VERSION_MINOR);
 	scriptInterface.SetProperty(metainfo, "engine_version", std::string(engine_version));
 	scriptInterface.SetProperty(metainfo, "mods", g_modsLoaded);
+	scriptInterface.SetProperty(metainfo, "mod_versions", Mod::GetLoadedModVersions(scriptInterface));
 
 	scriptInterface.FreezeObject(metainfo, true);