Official Site - Code Name: S.T.E.A.M. for Nintendo 3DS

Henry Fleming, John Henry, The Fox & Tom Sawyer

Command a strike team of unexpected heroes—assembled by Abraham Lincoln himself—to defend Earth against an alien invasion! Harness the power of steam to scout, surprise, and annihilate enemies in this star-spangled blend of turn-based strategy and action gameplay. Only you can outwit and outgun this otherworldly threat. Take ‘em out, agents!

Experience a new turn-based action strategy game from Intelligent Systems, the company behind the critically-acclaimed Fire Emblem and Advance Wars series.
Use steam to power movement, attacks, and perform powerful counter-attacks called overwatch.
Use planning and strategy to outflank and outsmart the enemy in fully 3D battlefields. Send an agent to higher ground to get a better vantage point, but be careful not to spread your team too thin.

Battle through alien-infested maps by choosing using a four-member team comprised of diverse characters that have unique abilities and weapons, including folk-hero John Henry, adventurous Tom Sawyer, the lion from Oz and more!
Go head-to-head against opponents in local and online battle modes! (Additional systems and games are required for multiplayer mode. Sold separately. Wireless broadband Internet access required for online play. For more info, go to support.nintendo.com.)
By tapping an existing Fire Emblem amiibo character on the touch screen of the New Nintendo 3DS XL system, players can enlist their help in battle.