diff --git a/storm/Core.cpp b/storm/Core.cpp
index 5e85d02..0a4df63 100644
--- a/storm/Core.cpp
+++ b/storm/Core.cpp
@@ -1,7 +1,8 @@
 #include "Core.hpp"
 #include "Event.hpp"
-#include "Transparency.hpp"
+#include "Region.hpp"
 #include "String.hpp"
+#include "Transparency.hpp"
 
 int32_t STORMAPI StormDestroy() {
     // Combined list of all destroy calls found in every game (as documentation)
@@ -11,7 +12,7 @@ int32_t STORMAPI StormDestroy() {
     // SGdiDestroy();       // SC 1.17
     // SVidDestroy();       // SC 1.17
     // SDrawDestroy();      // SC 1.17
-    // SRgnDestroy();       // WoW 3.3.5 (win), SC 1.17
+    SRgnDestroy();          // WoW 3.3.5 (win), SC 1.17
     // SMsgDestroy();       // WoW 3.3.5 (win), SC 1.17
     // SNetDestroy();       // SC 1.17
     SEvtDestroy();          // WoW 3.3.5 (win)
diff --git a/storm/Region.cpp b/storm/Region.cpp
index 7fc986a..cbf1054 100644
--- a/storm/Region.cpp
+++ b/storm/Region.cpp
@@ -578,6 +578,10 @@ void STORMAPI SRgnDelete(HSRGN handle) {
     s_rgntable.Delete(handle);
 }
 
+void STORMAPI SRgnDestroy() {
+    s_rgntable.Destroy();
+}
+
 void STORMAPI SRgnDuplicate(HSRGN origHandle, HSRGN* handle, uint32_t reserved) {
     STORM_VALIDATE_BEGIN;
     STORM_VALIDATE(handle);
diff --git a/storm/Region.hpp b/storm/Region.hpp
index 125fc75..020bb7a 100644
--- a/storm/Region.hpp
+++ b/storm/Region.hpp
@@ -14,6 +14,8 @@ void STORMAPI SRgnCreate(HSRGN* handlePtr, uint32_t reserved = 0);
 
 void STORMAPI SRgnDelete(HSRGN handle);
 
+void STORMAPI SRgnDestroy();
+
 void STORMAPI SRgnDuplicate(HSRGN origHandle, HSRGN* handle, uint32_t reserved = 0);
 
 void STORMAPI SRgnGetBoundingRectf(HSRGN handle, RECTF* rect);
diff --git a/test/Core.cpp b/test/Core.cpp
index c3382b4..36ef277 100644
--- a/test/Core.cpp
+++ b/test/Core.cpp
@@ -1,6 +1,7 @@
 #include "test/Test.hpp"
 #include "EventTest.hpp"
 #include "storm/Core.hpp"
+#include "storm/Region.hpp"
 
 TEST_CASE("StormDestroy", "[core]") {
     SECTION("always returns 1") {
@@ -36,4 +37,19 @@ TEST_CASE("StormDestroy", "[core]") {
             CHECK(SEvtDispatch(0, 0, 0, nullptr) == 1);
         }
     }
+
+    SECTION("SRgn") {
+        SECTION("destroys region handles") {
+            HSRGN rgn = nullptr;
+            SRgnCreate(&rgn);
+            REQUIRE(rgn != nullptr);    // valid handle
+
+            CHECK(StormDestroy() == 1);
+
+            // fails to duplicate because handle is invalid
+            HSRGN newrgn;
+            SRgnDuplicate(rgn, &newrgn);
+            CHECK(newrgn == nullptr);
+        }
+    }
 }
diff --git a/test/Region.cpp b/test/Region.cpp
index e58a213..7f0f54a 100644
--- a/test/Region.cpp
+++ b/test/Region.cpp
@@ -691,6 +691,36 @@ TEST_CASE("SRgnDelete", "[region]") {
     }
 }
 
+#if !defined(WHOA_TEST_STORMDLL)
+TEST_CASE("SRgnDestroy", "[event]") {
+    SECTION("destroys all region handles") {
+        HSRGN rgn1 = nullptr, rgn2 = nullptr, rgn3 = nullptr;
+        HSRGN newrgn1, newrgn2, newrgn3, testrgn1, newtestrgn1;
+
+        SRgnCreate(&rgn1);
+        SRgnCreate(&rgn2);
+        SRgnCreate(&rgn3);
+        REQUIRE(rgn1 != nullptr);
+        REQUIRE(rgn2 != nullptr);
+        REQUIRE(rgn3 != nullptr);
+
+        SRgnDuplicate(rgn1, &testrgn1);
+        CHECK(testrgn1 != nullptr);
+
+        SRgnDestroy();
+
+        SRgnDuplicate(rgn1, &newrgn1);
+        SRgnDuplicate(rgn2, &newrgn2);
+        SRgnDuplicate(rgn3, &newrgn3);
+        SRgnDuplicate(testrgn1, &newtestrgn1);
+        CHECK(newrgn1 == nullptr);
+        CHECK(newrgn2 == nullptr);
+        CHECK(newrgn3 == nullptr);
+        CHECK(newtestrgn1 == nullptr);
+    }
+}
+#endif
+
 TEST_CASE("SRgnDuplicate", "[region]") {
     RgnDataTest region;
     RECTF baseRect = { -1.0f, 1.0f, 1.0f, 2.0f };