I bought the Orange box only for Portal and it felt like a mini game added on the disc, I finished it in about 6 hours and some puzzles were way to easy. I liked the final boss battle though, it was fun. Well if you bought it only for Portal then I can see why you might be miffed at the length. I bought it mainly for Ep. 2 and TF2 and was expecting Portal to be some fun 3 or so hour diversion. I was so wrong about Portal. It turned out to be one of the most amazing and fun games I have played in a long time (but Ep. 2 is better ).