It's pretty much more different from Metal Slugs than any Metal Slugs are to their previous game in the series. When in normal mode and you jump and hold down the jump button, you sprout wings and descend more slowly. Pressing C brings you into a different mode that puts a bubble around you and makes holding down the shot button do rapid fire of your current weapon. But it's still a matter of if you like or don't like the Slug games you will probably do the same with this.