Addictive, unique and most importantly fun.
But the core essential of EBA, which is the gameplay, works out even better. You must keep with the rhythm of the song your listening to by tapping a circle when a bigger circle around it makes an outline around that circle. It's not as complicated as it sounds when you actually play. You also have to drag the stylus across the screen and spin the stylus in a few parts. Luckily, the key aspect of the game scores big time. And that's sound. All of the songs sound great coming out of the DS and I was suprised how well the speakers can work. Whether you like the music or not will really depend on your personal taste, but their all songs with good beats that fit the game well.
The graphics are great too. You character is on the bottom screen in 3D, and the top screen has comic book like drawings. It sounds strange but it all flows together so well somehow. The replay value for the game is great, it never really gets old. Especially because their are some unlockable songs near the end. The multi-player isn't as strong as I felt it could have been, but it's still enjoyable.
Overall, Elite Beat Agents has to be one of the best DS games out there, and anyone who has any intrest in pure and simple fun video games should pick this one up.