A revolutionary, visually impressive, eight hour long Quick Time Event...
Gameplay (6/10):
+Interactive movie at it's best
-But I want a game
+Interesting story
+Some of the motions with the analog sticks are quite fun to execute
-Motion control sucks
-Walking controls suck as well
Graphics (9/10):
+Great animation for the most part
+Very realistic
+Art design is great
+Characters are very detailed
-Some choppy framerate and frequent v-sync issues
Sound (9.5/10):
+Amazing score
+Sound effects are top notch
+Most voice acting is good
-Some voice acting is not so good
Value (5/10):
+You get your standard 8 hours
+Somewhat replayable/rewatchable with certain characters dying and others living, etc.
-Only enough content for a rental
My advice is that you rent Heavy Rain if you really want to play through it. I strongly do not recommend buying it. It is an interesting story presented with great music and graphics, so if you liked Indigo Prophecy, then this is definitely something you might want try.