It was a hit at our house! DS7 played with it for two days straight before wearing out on it for what I'm sure will only be a short while. I'd have to rate it a success, despite the fact that FingerHut ripped us off and sold us the SnapCircuits Jr. under the advertisement of SnapCircuits 300 and then took them off their website so we can't prove it. Note to self: don't shop at FingerHut anymore. Second note to self: buy more SnapCircuit kits for whatever holiday is next!