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Released in 1989 on Sega Mega Drive/Genesis.

Advance Wars: Dual Strike is the third installment in the Advance Wars series (first on DS media). Advance Wars is the international title of the Wars video game series, which dates back to the Family Computer game Famicom Wars in 1988. The storyline is a continuation of the previous series and is set in the new location of Omega Land. Black Hole has returned under the leadership of a new commander who seeks to give himself eternal life by draining the energy of Omega Land. The Allied Nations struggle to overcome this threat and are eventually joined by several former Black Hole commanding officers in an effort to save the land.

Just because this battle fits in the palm of your hand doesn't mean the stakes are small. On the contrary, this all-or-nothing fight will have you accessing guns, grenades, launchers, and weaponry of all sorts. Players assume command of an army that's out to reclaim a world that's been broken up by warring factions. The battle map is essentially a grid, and moving units is like moving chess pieces on a board -- each of the units can move a specific amount of spaces within this grid, and can only attack at a certain distance from specific enemies. Advance Wars features more than 115 maps, a map editor, head-to-head play via link cable, and an easy-to-understand tutorial mode for beginners.

Ogre is a 2D turn-based strategy game, and a direct computer conversion of Steve Jackson's board game of supertanks going against conventional infantry with howitzers. It plays exactly like the board game - on a hex-based board one player controls ordinary military units (soldiers, tanks etc.), and defends against the second player, who controls a supertank named "Ogre" - Ogre is very powerful, and can easily destroy normal weaponry and ground forces.

A retro-styled turn-based military strategy game where you command modern units (infantry, armor, aircraft, and naval vessels) across hex-based maps inspired by real-world regions. Emphasizing careful supply management, combined-arms tactics, and territory control, it features scenario campaigns, customizable battle setups, and straightforward UI mechanics that make deep strategic choices accessible to both newcomers and longtime wargamers.

Released in 1990 on Turbografx-16/PC Engine CD.

Set during the Civil War at the little town of Sharpsburg, Maryland along Antietam Creek.

Yggdra Union was remade/enhanced for the PSP with redrawn graphics, voice acting, some new characters, new/edited maps and an increase to 8 units brought into battles instead of the original limit of 6. "Yggdra Union tells the story of a princess ousted from her country and her mission to win it back from the Imperial Army. From a bandit king to a valiant knight, to a young Undine girl, Yggdra is joined in her mission by an ever-increasing band of rag-tag adventurers. Each of them has his or her own beliefs and ambitions, but as thier paths cross, they soon find that protecting what they love most means somehow finding a way to stop the Empire. Get ready for one of the most unique and engrossing straegy games ever to hit the PSP!"