I went to see the 3D mapping show at Osaka castle last Saturday. The gardens were beautifully lit up and there were some nice food and drink stalls. The 3D show on the castle itself was just OK, kinda cheesy. For ￥2000 (￥3500 if you want a premium ticket) it feels a little expensive. If you want to see it you better hurry up as it only has a few days left before it ends.