Piranha (1978, Joe Dante)
This one starts out okay, but the last act was a let down because it didn't focus as much on the two leads, who were the only characters that I really cared that much about.
5.5/10
Piranha II: The Spawning (1981, James Cameron)
This is James Cameron's first credit as a director, but he didn't actually direct much of it. Not only does the film look and feel cheap, but it's also boring as hell and I didn't care about anyone or anything that was happening.
3.5/10
Piranha (1995, Scott P. Levy)
This one is a remake of the 1978 film and it's basically just a much worse version of that film, because they don't change much in terms of scenes and dialogue. Pretty damn pointless and bad.
4/10
Piranha 3D (2010, Alexandre Aja)
Not as bad as it could have been and it's actually kind of amusing at times and there was some genuine tension near the end. It's a bad movie, but one that you can still have some fun with.
5.5/10
Piranha 3DD (2012, John Gulager)
This one was just awful and I couldn't even sit back and laugh at it most of the time. I didn't like any of the characters and there are tons of cringeworthy moments throughout.
3/10