How do I make Metal Slug 4 work?

[timrpgland]

Obviously it is the same game (I wasn't doubting that) and it will load quicker if it is smaller size, duh. I'm just curious if you are missing some parts of the emulation. Whether they be minor layers or something else. The actual cart size of Metal Slug 4 is 576 mbits which is like 72mbytes. If you can give me some kind of proof that it is still the best emulation available for Metal Slug 4 while only being 30mb, then maybe I'll listen. The fact is I use the emulator that works best for that game I have. Like I said, Kawaks I use for Metal Slug 3 but I have found using Nebula works perfectly with the larger Metal Slug 4 I have.