I finished LEGO Batman: The Videogame today. Because of a bug I can't finish the Wayne Manor bonus mission, so I didn't complete the game 100 %, but that's fine by me as this isn't the first bug I have encountered in games. It took me about 44 hours according to the game save file, which you can find from the Memory section of your Xbox 360 console. I'm sure LEGO Batman has the same game engine but maybe with some minor modifications as LEGO Star Wars games, but I was curious to see the problem solving puzzles. This is a quality game for many reasons and I will mention only a few of them. The playability and graphics are fine, but the music got annoying for me quite soon so I turned it off. It has Story Mode and Free Play mode where you can "own" the enemies with invincibility and stuff like that once you have found enough power bricks from different missions. You can make your own custom LEGO characters. The game has nice and easy puzzles although I did have to check a game guide to complete the game. It has cheats, which I didn't try as the game is so easy. All in all, it was a great experience.