Movies are the most advanced medium, when it comes to using a short time-frame in a very effective way. Written fiction for books isn't crafted to be consumed in one reading. Movies are. Games? Not so much.

I'm sure Heavy Rain would be much better if condensed into one short 2-hour episode. The flaws of its fiction become so transparent cause the game tries to play longer than it should. I know just as many players that really like Heavy Rain and it depends on what you expect from a "game". I do not expect games to as an 10 hour-ish reality escape. I'll give you two hours max to tell a story or 1000 hours max to offer me a brilliant system to master.

Collosus is so brilliant, cause it is a very small idea that's not overstretched within the timeframe of the game. For most studios the whole story of Collosus would be used for the first act only. Less is so much more and this game may be the best example. You don't do much in the game, it doesn't explain much for a very long time until it all plays out in the end and leaves an impression, that no epic RPG could succeed. I can not think of a movie that offers a similar experience. Maybe that's the best compliment for a game.