diff --git a/src/assets/images/room_bridge.png b/src/assets/images/room_bridge.png
new file mode 100644
index 0000000..8076249
Binary files /dev/null and b/src/assets/images/room_bridge.png differ
diff --git a/src/assets/images/room_engine.png b/src/assets/images/room_engine.png
new file mode 100644
index 0000000..ec8312e
Binary files /dev/null and b/src/assets/images/room_engine.png differ
diff --git a/src/assets/images/room_hydro.png b/src/assets/images/room_hydro.png
new file mode 100644
index 0000000..0b42af0
Binary files /dev/null and b/src/assets/images/room_hydro.png differ
diff --git a/src/index.html b/src/index.html
index 6515e21..af8861c 100644
--- a/src/index.html
+++ b/src/index.html
@@ -1 +1 @@
-<link rel="stylesheet" href="assets/styles.css"></link> <h1>murí</h1><p>a js13kgame by <a href="https://aaron-fischer.net/">Aaron Fischer</a> (2017)</p><div id="content"> <div> <canvas width="100" height="40" id="js13k-2017"></canvas> <div id="bubble"></div></div></div><p id="loading">loading game ...</p><script src="vendor/kontra.min.js"></script><script src="muri.min.js"></script>
+link rel="stylesheet" href="assets/styles.css"></link> <h1>murí</h1><p>a js13kgame by <a href="https://aaron-fischer.net/">Aaron Fischer</a> (2017)</p><div id="content"> <div> <canvas width="100" height="40" id="js13k-2017"></canvas> <div id="bubble"></div></div></div><p id="loading">loading game ...</p><script src="vendor/kontra.min.js"></script><script src="muri.min.js"></script>
diff --git a/src/index_dev.html b/src/index_dev.html
index 2d1719a..41569ce 100644
--- a/src/index_dev.html
+++ b/src/index_dev.html
@@ -15,5 +15,8 @@
 <script src="entity.js"></script>
 <script src="bubble.js"></script>
 <script src="mouse.js"></script>
-<script src="lift.js"></script>
-<script src="stasis.js"></script>
+<script src="room_bridge.js"></script>
+<script src="room_engine.js"></script>
+<script src="room_hydro.js"></script>
+<script src="room_lift.js"></script>
+<script src="room_stasis.js"></script>
diff --git a/src/muri.js b/src/muri.js
index f9df05f..156617d 100644
--- a/src/muri.js
+++ b/src/muri.js
@@ -68,6 +68,9 @@ var muri = (function() {
         kontra.assets.load(
             'room_stasis_dark.png',
             'room_stasis.png',
+            'room_engine.png',
+            'room_bridge.png',
+            'room_hydro.png',
             'stasis_doorSheet.png',
             'stasis_lightSwitch.png',
             'room_lift.png',
diff --git a/src/room_bridge.js b/src/room_bridge.js
new file mode 100644
index 0000000..64fc4e6
--- /dev/null
+++ b/src/room_bridge.js
@@ -0,0 +1,20 @@
+(function() {
+    'use strict';
+
+    var bridge = {};
+
+    var roomState = {
+    };
+
+    bridge.init = function() {
+    };
+
+    bridge.update = function() {
+    };
+
+    bridge.render = function() {
+    };
+
+    bridge.name = 'bridge';
+    muri.rooms.push(bridge);
+}());
diff --git a/src/room_engine.js b/src/room_engine.js
new file mode 100644
index 0000000..c100471
--- /dev/null
+++ b/src/room_engine.js
@@ -0,0 +1,20 @@
+(function() {
+    'use strict';
+
+    var engine = {};
+    
+    var roomState = {
+    };
+
+    engine.init = function() {
+    };
+
+    engine.update = function() {
+    };
+
+    engine.render = function() {
+    };
+
+    engine.name = 'engine';
+    muri.rooms.push(engine);
+}());
diff --git a/src/room_hydro.js b/src/room_hydro.js
new file mode 100644
index 0000000..a3b3ccd
--- /dev/null
+++ b/src/room_hydro.js
@@ -0,0 +1,20 @@
+(function() {
+    'use strict';
+
+    var hydro = {};
+    
+    var roomState = {
+    };
+
+    hydro.init = function() {
+    };
+
+    hydro.update = function() {
+    };
+
+    hydro.render = function() {
+    };
+
+    hydro.name = 'hydro';
+    muri.rooms.push(hydro);
+}());
diff --git a/src/lift.js b/src/room_lift.js
similarity index 100%
rename from src/lift.js
rename to src/room_lift.js
diff --git a/src/stasis.js b/src/room_stasis.js
similarity index 100%
rename from src/stasis.js
rename to src/room_stasis.js