Vilgax Attacks replicates the look of the animated series, but it's not an impressive-looking game. The character models are pretty much what you'd expect if you've ever seen commercials for the cartoon. Some of the animations are a bit off, but the alien forms look pretty good overall. The environments are passable, but you won't get lost in them the way you would while playing a game like BioShock. I know that's an unfair comparison to make when it comes to family-friendly games, but these kinds of games should be able to hold their own.
The alien forms are as well-voiced in Vilgax Attacks as they are in the television series. Though there's not a ton of voicework, all of it feels quite authentic -- with one major exception. Paul Eiding as Max Tennyson leads you through the tutorial sequences with a performance that is reminiscent of his role in Metal Gear Solid 2's most infamous scene. Every time he explained a mechanic, I had to keep myself from yelling "La Li Lu Le Lo!" at my television screen. Since the tutorial only lasts through the first level, this isn't a big deal. The music is solid, if forgettable. I don't watch either of the Ben 10 shows, but I chuckled when I heard an elevator music rendition of the Ben 10 theme.