diff --git a/fcore/enemy-behaviour.sml b/fcore/enemy-behaviour.sml
index 1d7649e..f4d01d9 100644
--- a/fcore/enemy-behaviour.sml
+++ b/fcore/enemy-behaviour.sml
@@ -1,4 +1,4 @@
-structure EnemyBehaviour =
+1tructure EnemyBehaviour =
 struct
   open GameType
 
@@ -143,6 +143,22 @@ struct
   fun hasVisted (find, visited) =
     helpHasVisited (0, Char.chr find, visited)
 
+  fun isBetween (p1, check, p2) = check >= p1 andalso check <= p2
+
+  fun isReachableFromBottom (prevPlat: platform, currentPlat: platform) =
+    let
+      val {x = prevX, y = prevY, width = prevWidth, ...} = prevPlat
+      val {x = curX, y = curY, width = curWidth, ...} = currentPlat
+
+      val prevFinishX = prevX + prevWidth
+      val curFinishX = curX + curWidth
+    in
+      (isBetween (prevX, curX, prevFinishX)
+       orelse
+       isBetween (prevX, curFinishX, prevFinishX)
+       andalso prevY + Constants.jumpLimit >= curY)
+    end
+
   fun isReachableFromLeft (prevPlat, currentPlat) =
     (* prev = right/from, current = left/to *)
     let
diff --git a/fcore/physics.sml b/fcore/physics.sml
index a17b532..2a78f5b 100644
--- a/fcore/physics.sml
+++ b/fcore/physics.sml
@@ -153,6 +153,22 @@ struct
         (x, y, size, size, 0, 0, ww, wh, 0, platformTree)
       val acc = getPlatformPatches (yAxis, platforms, platCollisions, [])
 
+      val acc = 
+        case yAxis of
+          DROP_BELOW_PLATFORM =>
+            (* if we dropped below platform before 
+            * but we have fully passed the platform now 
+            * such that there are no platform collisions
+            * then set new yAxis to FALLING
+            * so we do not drop below any platforms again
+            * *)
+            if QuadTree.hasCollisionAt (x, y, size, size, 0, 0, ww, wh, ~1,
+            platformTree)
+            then
+              Fn.W_Y_AXIS FALLING :: acc
+            else acc
+        | _ => acc
+
       val wallCollisions = QuadTree.getCollisionSides
         (x, y, size, size, 0, 0, ww, wh, 0, wallTree)
     in