Below average movie, but watchable

I've just seen this movie and it was not that bad. The reviews and the ratings said that it's unwatchable.
My only problem with the movie that it has zero originality and zero new ideas.
This has been done multiple times with better quality:
12 people in a room, they had to kill each other until 1 remaining and he/she is free at the end, with 1 little twist.

All in all, u can watch it one time, but u can skip it easily, if u dont like Saw,Exam or 9 Dead type of movies...

4/10