Probably one of the most frustrating games ever made
The AI defense is psychic and knows what play you audible to. If you start out with a run play, the safeties will come in to stop it. Audible to a pass play and they drop back to stop the pass. It's this kind of cheap difficulty that defines this game. Furthermore, turnovers are extremely prevalent to a point where it gets ridiculous. I've fumbled numerous times even when holding the "cradle the ball" button. AI Linebackers are still superhuman demigods who can sense where the ball is being passed without looking, leap 43 inches into the air, spin 180 degrees and make an interception.
Conversely, Your offense's AI is abysmal in every aspect. Don't even try to run a screen pass, because your blockers will just run past the people they're supposed to block. Your offensive line can't pick up blitzes either. Often two or three linemen will be occupied by a single pass rusher, letting two or three have their way with your quarterback. Punt coverage is similarly broken. Receivers barely even make a play for the ball. They prefer to stand still and let the ball come to them. Couple this with the superhuman linebackers and that leads to lots of interceptions. The game isn't difficult though, it's easy to overcome these flaws even on harder difficulties. Players should not have to deal with these glaring flaws however.
There are many sequences that cut from the game and break your rhythm and concentration. Periodically the screen will cut to the score of another game with some contrived dribble from Kirk Herbstreit. It is incredibly annoying and it grows tiresome after the 57th time. It baffles me that anyone thought this would be a good idea.
If the game has one thing going for it, it's the recruiting system in Dynasty mode. It's a fun thing to recruit players to build a great team, even if it does get a little tedious at times. I would even argue that the only legitimately fun part of the game can be found in the recruiting.
NCAA 13 adds to the recent drop in quality of the franchise. It saddens me that the franchise hasn't produced a good game since Mark Ingram was on the cover.