diff --git a/game.js b/game.js
index 553849b..7e03348 100644
--- a/game.js
+++ b/game.js
@@ -99,8 +99,17 @@ Sprite = function () {
   this.bridgesH = true;
   this.bridgesV = true;
 
+  // collidesWith determines the list of sprites that can interact with this sprite.
+  // Anything not in this list will just pass right through this sprite.
   this.collidesWith = [];
 
+  // getInterference returns a list of sprites that this sprite cannot spawn on top of.
+  // By default this is the same as collides with.  The exception is that ships can
+  // collide with coins, but they can also spawn on top of coins.
+  this.getInterference = function () {
+    return this.collidesWith;
+  }
+
   this.x     = 0;
   this.y     = 0;
   this.rot   = 0;
@@ -331,7 +340,9 @@ Sprite = function () {
     return trans;
   };
   this.isClear = function () {
-    if (this.collidesWith.length == 0) return true;
+    interferesWith = this.getInterference();
+
+    if (interferesWith.length == 0) return true;
     var cn = this.currentNode;
     if (cn == null) {
       var gridx = Math.floor(this.x / GRID_SIZE);
@@ -340,15 +351,15 @@ Sprite = function () {
       gridy = (gridy >= this.grid[0].length) ? 0 : gridy;
       cn = this.grid[gridx][gridy];
     }
-    return (cn.isEmpty(this.collidesWith) &&
-            cn.north.isEmpty(this.collidesWith) &&
-            cn.south.isEmpty(this.collidesWith) &&
-            cn.east.isEmpty(this.collidesWith) &&
-            cn.west.isEmpty(this.collidesWith) &&
-            cn.north.east.isEmpty(this.collidesWith) &&
-            cn.north.west.isEmpty(this.collidesWith) &&
-            cn.south.east.isEmpty(this.collidesWith) &&
-            cn.south.west.isEmpty(this.collidesWith));
+    return (cn.isEmpty(interferesWith) &&
+            cn.north.isEmpty(interferesWith) &&
+            cn.south.isEmpty(interferesWith) &&
+            cn.east.isEmpty(interferesWith) &&
+            cn.west.isEmpty(interferesWith) &&
+            cn.north.east.isEmpty(interferesWith) &&
+            cn.north.west.isEmpty(interferesWith) &&
+            cn.south.east.isEmpty(interferesWith) &&
+            cn.south.west.isEmpty(interferesWith));
   };
   this.wrapPostMove = function () {
     if (this.x > Game.canvasWidth) {
@@ -381,7 +392,29 @@ Ship = function () {
 
   this.postMove = this.wrapPostMove;
 
-  this.collidesWith = ["asteroid", "bigalien", "alienbullet"];
+  this.collidesWith = ["asteroid", "bigalien", "alienbullet", "coin"];
+  this.getInterference = function () {
+    return ["asteroid", "bigalien", "alienbullet"];
+  }
+
+  this.shoot = function() {
+    for (var i = 0; i < this.bullets.length; i++) {
+      if (!this.bullets[i].visible) {
+        SFX.laser();
+        var bullet = this.bullets[i];
+        var rad = ((this.rot-90) * Math.PI)/180;
+        var vectorx = Math.cos(rad);
+        var vectory = Math.sin(rad);
+        // move to the nose of the ship
+        bullet.x = this.x + vectorx * 4;
+        bullet.y = this.y + vectory * 4;
+        bullet.vel.x = 6 * vectorx + this.vel.x;
+        bullet.vel.y = 6 * vectory + this.vel.y;
+        bullet.visible = true;
+        break;
+      }
+    }
+  }
 
   this.preMove = function (delta) {
     if (KEY_STATUS.left) {
@@ -409,22 +442,7 @@ Ship = function () {
     if (KEY_STATUS.space) {
       if (this.delayBeforeBullet <= 0) {
         this.delayBeforeBullet = 10;
-        for (var i = 0; i < this.bullets.length; i++) {
-          if (!this.bullets[i].visible) {
-            SFX.laser();
-            var bullet = this.bullets[i];
-            var rad = ((this.rot-90) * Math.PI)/180;
-            var vectorx = Math.cos(rad);
-            var vectory = Math.sin(rad);
-            // move to the nose of the ship
-            bullet.x = this.x + vectorx * 4;
-            bullet.y = this.y + vectory * 4;
-            bullet.vel.x = 6 * vectorx + this.vel.x;
-            bullet.vel.y = 6 * vectory + this.vel.y;
-            bullet.visible = true;
-            break;
-          }
-        }
+        this.shoot();
       }
     }
 
@@ -436,13 +454,15 @@ Ship = function () {
   };
 
   this.collision = function (other) {
-    SFX.explosion();
-    Game.explosionAt(other.x, other.y);
-    Game.FSM.state = 'player_died';
-    this.visible = false;
-    this.currentNode.leave(this);
-    this.currentNode = null;
-    Game.lives--;
+    if (other.name != 'coin') {
+      SFX.explosion();
+      Game.explosionAt(other.x, other.y);
+      Game.FSM.state = 'player_died';
+      this.visible = false;
+      this.currentNode.leave(this);
+      this.currentNode = null;
+      Game.lives--;
+    }
   };
 
 };
@@ -654,23 +674,26 @@ Asteroid = function () {
 
   this.collidesWith = ["ship", "bullet", "bigalien", "alienbullet"];
 
+  this.breakIntoFragments = function () {
+    for (var i = 0; i < 3; i++) {
+      var roid = $.extend(true, {}, this);
+      roid.vel.x = Math.random() * 6 - 3;
+      roid.vel.y = Math.random() * 6 - 3;
+      if (Math.random() > 0.5) {
+        roid.points.reverse();
+      }
+      roid.vel.rot = Math.random() * 2 - 1;
+      roid.move(roid.scale * 3); // give them a little push
+      Game.sprites.push(roid);
+    }
+  }
+
   this.collision = function (other) {
     SFX.explosion();
     if (other.name == "bullet") Game.score += 120 / this.scale;
     this.scale /= 3;
     if (this.scale > 0.5) {
-      // break into fragments
-      for (var i = 0; i < 3; i++) {
-        var roid = $.extend(true, {}, this);
-        roid.vel.x = Math.random() * 6 - 3;
-        roid.vel.y = Math.random() * 6 - 3;
-        if (Math.random() > 0.5) {
-          roid.points.reverse();
-        }
-        roid.vel.rot = Math.random() * 2 - 1;
-        roid.move(roid.scale * 3); // give them a little push
-        Game.sprites.push(roid);
-      }
+      this.breakIntoFragments();
     }
     Game.explosionAt(other.x, other.y);
     this.die();
@@ -678,6 +701,41 @@ Asteroid = function () {
 };
 Asteroid.prototype = new Sprite();
 
+Coin = function () {
+  this.init("coin",
+            [-5,  0,
+              0,  5,
+              5,  0,
+              0, -5]);
+
+  this.collidesWith = ["ship"];
+
+  this.newPosition = function () {
+    this.x = Math.random() * Game.canvasWidth;
+    this.y = Math.random() * Game.canvasHeight;
+  };
+
+  this.newValue = function () {
+    this.value = Math.floor(Math.random() * 10 + 1) * 10;
+  }
+
+  this.setup = function () {
+    this.newPosition();
+    this.newValue();
+  };
+
+  this.collision = function (other) {
+    Game.score += this.value;
+    SFX.explosion();
+    this.visible = false;
+    Game.nextCoinTime = Date.now() + (10000 * Math.random());
+    this.newPosition();
+    this.newValue();
+  }
+
+}
+Coin.prototype = new Sprite();
+
 Explosion = function () {
   this.init("explosion");
 
@@ -881,6 +939,7 @@ Game = {
   bigAlien: null,
 
   nextBigAlienTime: null,
+  nextCoinTime: null,
 
 
   spawnAsteroids: function (count) {
@@ -940,6 +999,7 @@ Game = {
       Game.spawnAsteroids();
 
       Game.nextBigAlienTime = Date.now() + 30000 + (30000 * Math.random());
+      Game.nextCoinTime = Date.now() + 2000 + (10000 * Math.random());
 
       this.state = 'spawn_ship';
     },
@@ -968,6 +1028,10 @@ Game = {
         Game.bigAlien.visible = true;
         Game.nextBigAlienTime = Date.now() + (30000 * Math.random());
       }
+      if (!Game.coin.visible &&
+          Date.now() > Game.nextCoinTime) {
+        Game.coin.visible = true;
+      }
     },
     new_level: function () {
       if (this.timer == null) {
@@ -1095,6 +1159,11 @@ $(function () {
   extraDude.preMove = null;
   extraDude.children = [];
 
+  var coin = new Coin();
+  coin.setup();
+  sprites.push(coin);
+  Game.coin = coin;
+
   var i, j = 0;
   var showFramerate = false;
   var avgFramerate = 0;