Was this intended to be 3-D?

The shot blocking in this film looks like it was intended to be in 3-D. Lots of character motion up- and down-stage, rather than left or right. The scene where the monster is reaching for the sleeping girl also look like 3-D, as did some of the starfield effects. Did this start as a 3-D and then maybe get released in 2-D for lack of budget?