Released in 2005 by WayForward Technologies (the wizards behind Contra 4, Shantae, and many other fantastic games), Sigma Star Saga isn't your typical GBA fare. It's a mind-bending blend of side-scrolling shoot 'em up action and RPG elements, all wrapped in a compelling sci-fi story of galactic war and moral ambiguity.

Forget just blasting aliens into space dust – in Sigma Star Saga, you're genetically engineering your enemies to fight for you! You play as Ian Rogue, a pilot in the Sol Terra Alliance, tasked with uncovering the truth behind the Krill threat and finding a way to end the seemingly endless war. But instead of just relying on superior firepower, you'll be collecting "Gene Fragments" from fallen Krill, combining them to create powerful new creatures, and deploying them in the heat of battle.