To start off with, the game's visuals are just top notch. The terrain and water look fantastic. The vehicles look great, are easy to recognize, and are easy to tell apart. The weapon effects and explosions are excellent. A battlefield that was once quiet and still while you were thinking about your strategy suddenly comes alive in missile fire and explosions as you begin making attacks. The interface is equally impressive. It's very easy to make the interface for a strategy game cumbersome and hard to use. However, Massive Assault's interface is clean, streamlined, and just plain old perfect. Aside from when I was riding the usual learning curve, I was never confused by what I saw onscreen.
The true test of a game's music comes down to one simple fact. Does the player leave it on or turn it off? Well I can tell you now; I never turned the music off in Massive Assault. Now, to be fair, I'm usually pretty forgiving of music and almost never actually go turn it off, but the fact that a strategy game has good music is something worth mentioning. There's not even a whole lot of variety. There are only about 2-3 songs, but what they had fit the game perfectly. The sound effects mostly consist of things moving, firing, and exploding, and it's all gravy.