It hasn't aged spectacularly. Especially in comparison to the other LEGO Batman games, but it's still fun. Kinda nice to actually have stuff contained to Batman characters, too.
I used to play this a lot as a kid. It's nothing special, but it's decent. Good intro to bullet hell for someone young who's never played one before. You get to see a lot of DP characters appear, too, and the unique chapter title cards are neat.