I didn't even know it was a flop. I thought the movie was great and refreshingly different from most "copy and paste" Sci-Fi movies, that flood the big screen.
I can't get terrestrial television where I am though,(Which is actually a blessing), but when I saw it on the DVD shelves, I got really excited and wasn't disappointed at all.
There are so many great movies though, that are reported as flops, just because they have plots that maybe a bit of a stretch for the average punter.
Critics remind me of kids playing musical chairs, none of them wants to be the one standing when the music stops. But if the profit determines the success, then I don't really care anyway, as long as I get to watch it. Besides, they end up in the $10 bin faster, hehe.