Initially I was going to the overall worst movie adaptation for video games but then decided I would narrow this list down to only the ones that I have actually seen.
In no particular order below my 5 worst video game movie adaptations:
Super Mario Bros (1993) – Bob Hoskins, John Leguizamo
I saw this movie at the movie theatre when it was released, if only I could go back to my younger self.
Double Dragon (1994) – Robert Patrick, Mark Dacascos, Scott Wolf
Again another awful movie adaptation of a fun game from the 1980s, it is like no one has actually played the games before making a movie
It does have Alyssa Milano in it though, so that is a bonus I guess.
Mortal Kombat: Annihilation (1997) – Robin Shou
The first Mortal Kombat (1995) I actually enjoyed and own on DVD, but this follow up movie is so bad its bad, looks cheap and the acting all round laughable.
In the Name of the King: A Dungeon Siege Tale (2007) – Jason Statham
The Stath slumming it with the legendarily bad Uwe Boll directing. Seriously look up some his other movies, they are all bad.
Wing Commander (1999) – Freddie Prinze Jr.
Again saw this at the movies if Im not mistaken XPD was also there, bad special effects and cingeworthy acting.
Please be advised that this is only my opinion and you might love some of these above movies.