diff --git a/OGP1718-Worms/src/worms/facade/Facade.java b/OGP1718-Worms/src/worms/facade/Facade.java
index 13d63c7..48a8898 100644
--- a/OGP1718-Worms/src/worms/facade/Facade.java
+++ b/OGP1718-Worms/src/worms/facade/Facade.java
@@ -2,10 +2,12 @@ package worms.facade;
 
 import worms.model.Food;
 import worms.model.Team;
+import worms.model.World;
 import worms.model.Worm;
 import worms.util.IllegalNameException;
 import worms.util.ModelException;
 import worms.util.Coordinate;
+import worms.util.MustNotImplementException;
 
 import java.math.BigInteger;
 import java.util.Collection;
@@ -794,4 +796,86 @@ public class Facade implements IFacade {
     public double getMass(Worm worm) throws ModelException {
         return worm.getMass();
     }
+
+    /**
+     * Create a new team for the given world with given name and with no members yet.
+     */
+    @Override
+    public Team createTeam(World world, String name) throws ModelException, MustNotImplementException {
+        return null;
+    }
+
+    /**
+     * Terminate the given team.
+     */
+    @Override
+    public void terminate(Team team) throws ModelException, MustNotImplementException {
+
+    }
+
+    /**
+     * Check whether the given portion of food is terminated.
+     */
+    @Override
+    public boolean isTerminated(Team team) throws ModelException, MustNotImplementException {
+        return false;
+    }
+
+    /**
+     * Return the name of the given team.
+     */
+    @Override
+    public String getName(Team team) throws ModelException, MustNotImplementException {
+        return null;
+    }
+
+    /**
+     * Return the team to which this worm belongs.
+     */
+    @Override
+    public Team getTeam(Worm worm) throws ModelException {
+        return null;
+    }
+
+    /**
+     * Return the number of worms in the given team.
+     */
+    @Override
+    public int getNbWormsOfTeam(Team team) throws ModelException, MustNotImplementException {
+        return 0;
+    }
+
+    /**
+     * Return a list of all the worms in the given team, sorted alphabetically.
+     * This method must run in linear time.
+     */
+    @Override
+    public List<Worm> getAllWormsOfTeam(Team team) throws ModelException, MustNotImplementException {
+        return null;
+    }
+
+    /**
+     * Add the given worms to the given team.]
+     */
+    @Override
+    public void addWormsToTeam(Team team, Worm... worms) throws ModelException, MustNotImplementException {
+
+    }
+
+    /**
+     * Remove the given worms from the given team.
+     */
+    @Override
+    public void removeWormsFromTeam(Team team, Worm... worms) throws ModelException, MustNotImplementException {
+
+    }
+
+    /**
+     * Merge the given teams.
+     *   - All the worms of the supplying team are transferred to the receiving team.
+     */
+    @Override
+    public void mergeTeams(Team recevingTeam, Team supplyingTeam) throws ModelException, MustNotImplementException {
+
+    }
 }
diff --git a/OGP1718-Worms/src/worms/facade/World.java b/OGP1718-Worms/src/worms/facade/World.java
deleted file mode 100644
index 40a587d..0000000
--- a/OGP1718-Worms/src/worms/facade/World.java
+++ /dev/null
@@ -1,4 +0,0 @@
-package worms.facade;
-
-public class World {
-}
diff --git a/OGP1718-Worms/src/worms/model/World.java b/OGP1718-Worms/src/worms/model/World.java
new file mode 100644
index 0000000..d56a08f
--- /dev/null
+++ b/OGP1718-Worms/src/worms/model/World.java
@@ -0,0 +1,76 @@
+package worms.model;
+
+import java.util.ArrayList;
+
+public class World {
+
+    private boolean terminated = false;
+
+
+    public World(double width, double height, boolean[][] map) {
+
+        if (!isValidDimension(width) || !isValidDimension(height)) throw new IllegalArgumentException();
+
+        this.width = width;
+        this.height = height;
+        this.map = map;
+    }
+
+
+
+    // region Dimensions
+    //===================================================================================
+
+    public static boolean isValidDimension(double dimension) {
+        return dimension >= 0.0 && dimension <= Double.MAX_VALUE;
+    }
+
+    public double getWidth() {
+        return width;
+    }
+    public double getHeight() {
+        return height;
+    }
+    private final double width;
+    private final double height;
+
+    // ===================================================================================
+    // endregion
+
+    // region map
+    //===================================================================================
+
+    public boolean[][] getMap() {
+        return map;
+    }
+
+    public boolean isPassable(double[] location) {
+
+        if (location[0] >= getMap()[0].length || location[0] < 0.0 ||
+                location[1] >= getMap().length || location[1] < 0.0) {
+            return true;
+        }
+        return this.map[(int) Math.round(location[0])][(int) Math.round(location[1])];
+    }
+
+    public boolean isPassable(double[] center, double radius) {
+        return false;
+    }
+
+    public boolean isTerminated() {
+        return terminated;
+    }
+
+    public void terminate() {
+        setTerminated(true);
+    }
+
+    private final boolean[][] map;
+
+    private void setTerminated(boolean terminated) {
+        this.terminated = terminated;
+    }
+
+    // ===================================================================================
+    // endregion
+}
diff --git a/OGP1718-Worms/src/worms/model/Worm.java b/OGP1718-Worms/src/worms/model/Worm.java
index 56b3971..5d794f6 100644
--- a/OGP1718-Worms/src/worms/model/Worm.java
+++ b/OGP1718-Worms/src/worms/model/Worm.java
@@ -597,8 +597,8 @@ public class Worm {
     	long total = 1 + (new Random().nextLong() * (10 - 1));
     	long loseSmallest = (long) (total / (largestWorm.getOrientation() / (smallestWorm.getOrientation() + largestWorm.getOrientation())));
     	long loseLargest = total - loseSmallest;
-    	smallestWorm.decreaseHitPoints(loseSmallest);
-    	largestWorm.decreaseHitPoints(loseLargest);
+    	smallestWorm.incrementHitPoints(loseSmallest);
+    	largestWorm.incrementHitPoints(loseLargest);
     }
 
     //===================================================================================
@@ -771,7 +771,7 @@ public class Worm {
     
     // region hitPoints
     //===================================================================================
-    
+
     @Basic @Raw
     public long getHitPoints() {
         return this.hitPoints;
@@ -780,13 +780,13 @@ public class Worm {
     @Raw
     private void setHitPoints(long hitPoints) {
         if (hitPoints <= 0)
-            //TODO worm sterft + weghalen van gamewereld
+            // TODO worm sterft + weghalen van gamewereld
         this.hitPoints = hitPoints;
     }
     
     private long hitPoints;
     
-    public void decreaseHitPoints(long value) {
+    public void incrementHitPoints(long value) {
     	setHitPoints(getHitPoints() - value);
     }