By far the best interactive game - DaBird (click on the link for Amazon sales).
​Original or fake - does not matter as long as it flies.
It is best played in a large open space where you can make it fly in circular motions to better imitate flying bird. No cat can resist it and they play it until they pant and fall down of exhaustion: great exercise for a fat or/and lazy cat but any cat will thank you for offering him this amazing toy!