Here's part of a review:
"You may be wondering how the hell a movie like Saw gets translated into a game. I too had that lingering question before I popped that sucker into my system. The answer is seamlessly. The game is a perfect translation of the movie in almost all respects. Each puzzle tests the question of whether or not you appreciate your life even if it means taking another's life in order to continue on. The best and worst part about the game involves the puzzle system. Saw offers a large range of puzzles, but the bulk of them are painfully easy, even the timed challenges. One of my favorite puzzles involves a Shotgun Necklace you acquire later on thanks to Ol' Pig Head. Anytime you get near a person who is also wearing the necklace it sets off a timer. If you can't escape their presence in time you'll blow up. If you do, they blow up. This isn't necessarily a puzzle in itself, but the precautions you can take such as bolting doors and watching them incinerate from the other side is mildly amusing in its own.
The game isn't necessarily scary, but it will make you anxious as hell. Time-based puzzles are enough to make your heart explode, as are the variety of reoccurring traps. Arguably one of the best aspects of the game is the ability to create your own traps. There is nothing like setting up a trip wire rigged to explode and watching a crazed man storm right into it unexpectedly. The fighting system is a bit laughable, asking players to handle both the left trigger and the controller's face buttons. The end result is really inconvenient and a bit finicky. Luckily health is easy to come by so it's not so horribly you can't advance through the game. The fighting system may be a bit stiff but the weapon selection is vast and oftentimes hilarious. A good example is the mannequin arm you find well into the game. Trust me, there's nothing quite like beating a guy down with a doll arm. Overall, the weapons are big thumbs up but the less than stellar fighting system detracts from them.
Compared to other survival-horror games on the market as of late, Saw is one of the top titles. Is it worth the $60? Not so much. I do suggest renting it or picking it up later on down the road when it's half the price.
PROS: Amazing graphics, Non-Linear/Realistic gameplay, Seamless loads and level advancement
CONS: Subpar voice acting (just like the movie), Puzzles are too easy, Fighting system is stiff"
Most of the user comments say you should just rent it. Cons from another review I read were about the fighting system and that puzzles/enemies may get pretty annoying.