Is there not an option for "All of the ones Uwe Boll made?"
As painful as it is to say, it's definitely not Resident Evil. Even though I consider all movies past the first one, and maybe second, to be quite bad, it's still a step above some of the gutter ones listed. Same for Hitman and Prince of Persia. If I had to pick an absolute worst one, of the ones I've actually seen (I know of House of the Dead's reputation and have therefore not tortured myself by watching it) I'll go with that Mario Bros. one. It's weird because they actually somehow got some good actors and just did that. Was pretty horrible. Mario isn't exactly storyline heavy, not staying faithful to what little there is shows a new level of failure.