LEGO Batman, while still a fundamentally good game, is the worst of the recent LEGO series of video games
LEGO Batman is your standard LEGO fare with a few twists to make it fit more into the Batman world. For example, you don't really buy too many Characters, as Batman and Robin are your main protagonists. Instead, Batman and Robin each get a number of different suits that can affect their abilities in different ways. For example, Batman gets a demolition suit that allows him to lay down mines or a flight suit that lets him glide down from the top of his jumps. Robin gets a highly entertaining magnet boot suit that allows him to walk up some surfaces. These can be upgraded with studs over time. In addition, you get to play as the various villains you encounter. When you total up the good guy + bad guy missions, you get a whopping 6 sets of adventures to go through (as many as in LEGO Star Wars Complete) which gives plenty of play time and plenty to explore.
One of the fundamental problems this game suffers from is an imrpoper marriage of subject and medium. The more recent Batman movies are very, very dark while LEGO's are fun little toys. While the game does a good job being humerous, the whole time I felt like something wasn't quite meshing right.
The other major bugaboo with the game is a sort of checkpoint system that seems to have been put in place. WHen I was going through co-op with a friend, we noticed that whenever one person died, that person would respawn at a point behind us, sometimes WAY earlier in the level. Because of the limits of the camera, the remaining player would usually get dragged off the edge of the level and end up dead. That left us back at the begining. This got very frustrating as sometimes the puzzles require platform jumping, grapling, and almost all require teamwork of some sort. It got annoying having to redo puzzles several times because someone missed a jump. I checked back in the other LEGO games, and this checkpoint system didn't exist. When you die, you pop up right where you left off. Not so in LEGO Batman.
Overall, the game is fairy positive. The graphical look of the game is very polished, and the soundtrack is very deep, although (as mentioned earlier) sometimes feels out of place. Despite a few specific snafus, this game is worth playing, especially if you enjoyed any of the other LEGO games.