Advance Wars 2 - Black Hole Rising (Gameboy Advance GBA)

Wage war on land, sea and air across more than 100 battlefields. Go through boot camp via an interactive tutorial that will teach you everything you need to know to achieve victory on the battlefield. Once you're commissioned as a CO in the Orange Army, you can dive into one of the game's many modes. A story-driven Campaign mode takes you through a series of increasingly challenging missions, leading to a showdown with an awesomely powerful enemy army. Even after you've waged multiple wars, the extremely shrewd artificial intelligence will continually surprise you. Multiplayer action includes Hot Seat mode, where up to 4 players each give orders to their units before passing the GBA to the next player to see the results.