diff --git a/public/break_escape/js/systems/doors.js b/public/break_escape/js/systems/doors.js
index 8fbd107..60688f5 100644
--- a/public/break_escape/js/systems/doors.js
+++ b/public/break_escape/js/systems/doors.js
@@ -535,6 +535,16 @@ export function createDoorSpritesForRoom(roomId, position) {
         doorSprite.interactionZone = zone;
         doorSprites.push(doorSprite);
 
+        // If door starts unlocked, mark it as walkable in pathfinding
+        if (!doorSprite.doorProperties.locked && window.pathfindingManager) {
+            window.pathfindingManager.markDoorWalkable(
+                roomId,
+                doorSprite.doorProperties.worldX,
+                doorSprite.doorProperties.worldY,
+                doorSprite.doorProperties.direction
+            );
+        }
+
         console.log(`Created door sprite for ${roomId} -> ${connectedRoom} (${direction}) at (${doorX}, ${doorY})`);
     });
 
@@ -608,6 +618,31 @@ function openDoor(doorSprite) {
     // Wait for game scene to be ready before proceeding
     // This prevents crashes when called immediately after minigame cleanup
     const finishOpeningDoor = () => {
+        // Update pathfinding grid to mark door tiles as walkable
+        if (window.pathfindingManager) {
+            // Mark door walkable in the current room
+            window.pathfindingManager.markDoorWalkable(
+                props.roomId, 
+                props.worldX, 
+                props.worldY, 
+                props.direction
+            );
+            
+            // Also mark door walkable in the connected room (opposite direction)
+            const oppositeDirections = {
+                'north': 'south',
+                'south': 'north',
+                'east': 'west',
+                'west': 'east'
+            };
+            window.pathfindingManager.markDoorWalkable(
+                props.connectedRoom,
+                props.worldX,
+                props.worldY,
+                oppositeDirections[props.direction]
+            );
+        }
+        
         // Load the connected room if it doesn't exist
         // Use window.rooms to ensure we see the latest state
         const needsLoading = !window.rooms || !window.rooms[props.connectedRoom];
diff --git a/public/break_escape/js/systems/npc-pathfinding.js b/public/break_escape/js/systems/npc-pathfinding.js
index 9d21b65..895607c 100644
--- a/public/break_escape/js/systems/npc-pathfinding.js
+++ b/public/break_escape/js/systems/npc-pathfinding.js
@@ -454,6 +454,64 @@ export class NPCPathfindingManager {
     getBounds(roomId) {
         return this.roomBounds.get(roomId);
     }
+
+    /**
+     * Mark door tiles as walkable in the pathfinding grid
+     * Called when a door is unlocked/opened
+     * 
+     * @param {string} roomId - Room containing the door
+     * @param {number} worldX - World X position of door
+     * @param {number} worldY - World Y position of door
+     * @param {string} direction - Door direction (north/south/east/west)
+     */
+    markDoorWalkable(roomId, worldX, worldY, direction) {
+        const grid = this.grids.get(roomId);
+        const pathfinder = this.pathfinders.get(roomId);
+        const bounds = this.roomBounds.get(roomId);
+
+        if (!grid || !pathfinder || !bounds) {
+            console.warn(`⚠️ Cannot update door pathfinding - room ${roomId} not initialized`);
+            return;
+        }
+
+        // Convert world coordinates to tile coordinates
+        const tileX = Math.floor((worldX - bounds.worldX) / TILE_SIZE);
+        const tileY = Math.floor((worldY - bounds.worldY) / TILE_SIZE);
+
+        // Mark door tiles as walkable (typically 2 tiles for a door)
+        const tilesToMark = [];
+        
+        switch (direction) {
+            case 'north':
+            case 'south':
+                // Horizontal door - 2 tiles wide
+                tilesToMark.push({ x: tileX, y: tileY });
+                tilesToMark.push({ x: tileX + 1, y: tileY });
+                break;
+            case 'east':
+            case 'west':
+                // Vertical door - 2 tiles high
+                tilesToMark.push({ x: tileX, y: tileY });
+                tilesToMark.push({ x: tileX, y: tileY + 1 });
+                break;
+        }
+
+        let markedCount = 0;
+        tilesToMark.forEach(tile => {
+            if (tile.y >= 0 && tile.y < grid.length && 
+                tile.x >= 0 && tile.x < grid[0].length) {
+                if (grid[tile.y][tile.x] === 1) {
+                    grid[tile.y][tile.x] = 0; // Mark as walkable
+                    markedCount++;
+                }
+            }
+        });
+
+        // Update the pathfinder with the new grid
+        pathfinder.setGrid(grid);
+
+        console.log(`✅ Marked ${markedCount} door tiles as walkable in ${roomId} at (${tileX}, ${tileY}) direction: ${direction}`);
+    }
 }
 
 // Export as global for easy access