Group now extends PIXI.DisplayObjectContainer, rather than owning a _container property, which makes life a whole lot easier re: nesting.

examples/wip/misc/multiball.js

@@ -0,0 +1,40 @@
+
+var game = new Phaser.Game(800, 600, Phaser.AUTO, 'phaser-example', { preload: preload, create: create, update: update });
+
+function preload() {
+
+	game.load.spritesheet('spinner', 'assets/sprites/bluemetal_32x32x4.png', 32, 32);
+
+}
+
+var sprites;
+
+function create() {
+
+	//	Here we create a group, populate it with sprites, give them all a random velocity
+	//	and then check the group against itself for collision
+
+	sprites = game.add.group();
+
+	for (var i = 0; i < 30; i++)
+	{
+		var s = sprites.create(game.rnd.integerInRange(100, 700), game.rnd.integerInRange(32, 200), 'spinner');
+		s.animations.add('spin', [0,1,2,3]);
+		s.play('spin', 20, true);
+		s.body.velocity.x = game.rnd.integerInRange(-200, 200);
+		s.body.velocity.y = game.rnd.integerInRange(-200, 200);
+	}
+
+	sprites.setAll('body.collideWorldBounds', true);
+	sprites.setAll('body.bounce.x', 1);
+	sprites.setAll('body.bounce.y', 1);
+	sprites.setAll('body.linearDamping', 0);
+	sprites.setAll('body.minBounceVelocity', 0);
+
+}
+
+function update() {
+
+	game.physics.collide(sprites);
+
+}