Cool Concept, Poor Execution
This is a list of games that could have been great, but failed to deliver.
These games have some cool concept to them, but they have so much wrong with the game.
Some times these problems are rudimentary like: the camera doesn't follow the character around corners or the enemies don't see you.
These are probably great ideas worth revisiting. Or maybe they are tales of Warning that these concepts are more difficult to implement that initially thought.