Metal Slug Advance

Metal Slug Advance is a 2D run-and-gun shooter where you blast through five missions on foot or piloting slug vehicles. You'll fight across varied terrain—land routes, underwater bases—destroying enemies and freeing hostages. Beyond pure shooting, missions include strategic puzzles that gate your progress. The game uses an E-card collection system: gather over 100 different cards to boost your character's stats and abilities. It's the arcade Metal Slug formula condensed for handheld play, trading the series' usual stage count for portable-friendly mission length. If you want side-scrolling action that fits between commutes and don't mind puzzle elements breaking up the gunfire, this delivers that in a Game Boy Advance package.