diff --git a/src/archway.c b/src/archway.c
new file mode 100644
index 00000000..4596b42c
--- /dev/null
+++ b/src/archway.c
@@ -0,0 +1,27 @@
+#include "global.h"
+#include "entity.h"
+
+extern void UpdateSpriteOrderAndFlip();
+extern u32 CheckIsDungeon();
+
+void Archway(Entity *this)
+{
+    u32 v1;
+    u32 v2;
+    u32 v3;
+
+    if (this->action == 0) {
+        v1 = this->action = 1;
+        v2 = this->spriteSettings.raw;
+        v1 = v1 - 0x5;
+        v1 = v1 & v2;
+        this->spriteSettings.raw = v1 | 1;
+        this->frameIndex = this->entityType.parameter;
+        this->collisionLayer = 2;
+        UpdateSpriteOrderAndFlip(this);
+        v3 = CheckIsDungeon();
+    if (v3 != 0) {
+      this->ticks.b0 = (this->ticks.b0 & 0xf8) | 1;
+    }
+  }
+}
\ No newline at end of file