When I got to the theater, I asked the usherette where the 3D glasses were and she said the version I was going to see was not in 3D; the 3D version started almost 2 hours later in another theater. This was the worst of the three Ice Age flicks, but I imagine it was made for 3D as there were some scenes in which we really felt like we were missing out on something. I don't understand why there are two versions and why there wasn't a distinction on the theater's website where I purchased the tickets in advance. It was also unbelievable in that all the dinosaurs lived in some magical underground world. If you saw and enjoyed Ice Age 1 and 2, just enjoy the fond memories and save yourself the 12 bucks.