As a rule, movies based on video games tend to be just plain awful, so why would anyone bother making a video game based on a movie based on a video game? For the sake of profit, and so bloggers like myself can make fun of them, why else?!
Battleship the video game that's based neither on the blockbuster movie nor the board game? Mortal Kombat style video look for the Street Fighter movie game? Uggghh!
If you see these games at a store or in a friend's collection, do the world a favor and destroy them on sight!