Only 5 levels, but harder than some games these days.

User Rating: 8.7 | Metal Slug 3 XBOX
I'll admit it, once I heard it only had 5 levels, I was a bit skeptical. But I got it and tried it out anyways. Me and my friend got to the last level in about a day. But the last level took us forever to beat. We kept playing it over and over, and finally beat it. Once you beat the Arcade Mode, you unlock minigames. One is Storming the Mother Ship, where you play other levels as a bad guy. Another one is where you compete against a friend and see who can eat the most food and gain the most weight before time runs out. The latter of these isn't great, but the game is great and definetely worth the money.