I've read the comics, I've watched the movie, and now I've played the game, which is a small mix of both, with a bit of Paul Robertson weirdness thrown in. Scott Pilgrim vs. The World: The Game is a visual blend of references pulled from everything in general and slapped into a "River-City Ransom"-esque game allowing 4-player co-op in the same room. And the game plays splendidly...when it works.
What probably bothered me the most was the game's inconsistent save feature. At times, I would progress a full 6 levels and then go back to the world map, then power out. When I returned to the game, that 6 levels of progression are wiped clean when I returned. After some OCD, I left my save demons to rest only after verifying through clean exit to the title screen before returning to the game. No game should exit without an exhaustive test of the save feature, and it's sad to see a game so awesome like this get neglected in that department.
Another annoying feature is the lag the game sometimes had when trying to access the pause menu at times, sometimes reaching as long as a full 3 seconds before anything would register. Add to that one game freeze so far, and the whole thing would've been a recipe for disaster if it was a game I didn't absolutely love.
The game is initially slow to get the ball rolling, and, if you have a short temper, can be quite frustrating to deal with. Your character starts with a simple jump and set of attacks, and all your stats are zero to begin with, so you will get beat up, and fast. It's not until you take advantage of all the stat-building items you can purchase before you can really enjoy the game for what it's worth - a really awesome street brawler with TONS of enemies. You have stats for your strength, defense, speed, and willpower, all of which can be leveled up (maximum 100 points) through items purchased throughout the game. But it takes more than increased stats to give you a fighting edge; you'll need extra moves, and those are acquired over time as you level up. From performing dash attacks to double-jumping, you will amass a vast array of attacks against any enemy.
And all the moves you learn are practical. Initially you only have a simple block and your attacks, so you have no choice but to go on the offensive. Later on, you develop stronger attacks, and even an evade and recovery ability to keep you in the fight longer. I went from being completely offensive to holding a defense first to performing evade tactics first before anything. Before I knew it, I took out large groups of enemies in no time.
Did I forget to add that a joystick makes the experience even more arcade-y? Like, say, a Street Fighter IV TE joystick? I've grown so accustomed to the stick that I fumble horribly on a regular controller now.
Finally, to those people that won't play/buy the game because of the lack of online co-op...GET OVER YOURSELF!! The game stands to be one of those great games you can play again and again by yourself, and is an absolute blast to play with 2 or more people IN THE SAME ROOM!! Who wants to deal with people that jump online to play a little bit, only to exit unexpectedly just to fuck you over? At least if everyone's in the same room, you can use something called a "pause" button and resume back into gameplay. But to deny a game because of its lacking online possibilities is very selfish of ANY gamer.
Overall, despite the games shortcomings, Scott Pilgrim vs. The World: The Game is one that, for a measly $10, will give any gamer wonderful visual easter eggs, awesome 8-bit music, and plenty of replay value. You'd be denying yourself a stellar game if you didn't pick this up.