I would really like to be proven wrong that a good movie can be based on a video game.
I remember a very long time ago the talking of a possibilty of a live action Zelda movie. But the failure of super mario ended that real quick.
Only to Fans years later clamoring for such a movie, because of the lord of the rings films were sucessful.
But to me Zelda would like te Eragon movie probalbly be a bad remake of star wars 77's plot.
If you compare the harry potter films that were sucessful, the first narnia movie, or lord of the rings to every other dime a dozen bad fantasy movie made since the 70's and 80's it gets obvious real quick only a few were good films. A scarce handful of them.
Though is possible for a movie to have a well written script, good direction and still be a financial failure but a good film all the same in theory.
The Good Sci Fi and fantasy films are followed by imitations or cash ins. The Indiana Jones and Star Wars films have been remade rather poorly under different names by different directors who never gave Lucas a dime for their outright theft. Lucas somehow got his revenge at least for indiana jones to the detriment of the character by copying the copies with the 4th film. Even if entire effects sequences were lifted from the work ilm did for said rip offs like the mummy 2.
To be sure people know what i am talking about i mean the original star wars and indiana jones trilogies. Not the later stuff. It is even worse when someone makes a pastiche work of their early work without the same soul or caring put in for the characters.
I would be Like Robert Z. doing a prequel back to the future trilogy all in cgi, poorly written and destroys the characters from the other films. Or Steven Spielberg doing a prequel trilogy of indiana jones, wait Lucas already did that prequel without Spielbergs involvement, as a tv series set up as a history class for kids. Without the action and adventure of the films or John Williams,lol.