Code Name: S.T.E.A.M.

Code Name: S.T.E.A.M.
Packaging artwork released for all territories.
Developer(s)	Intelligent Systems Nintendo SPD
Publisher(s)	Nintendo
Director(s)	Paul Patrashcu
Producer(s)	Tohru Narihiro Hitoshi Yamagami
Designer(s)	Masayuki Horikawa
Programmer(s)	Susumu Ishihara
Artist(s)	Takako Sakai
Writer(s)	Mitsuyasu Sakai
Composer(s)	Yoshito Sekigawa
Platform(s)	Nintendo 3DS
Release	NA: March 13, 2015 JP: May 14, 2015 EU: May 15, 2015
Genre(s)	Turn-based strategy
Mode(s)	Single-player, multiplayer

Code Name: S.T.E.A.M., known in Japan with the subtitle Lincoln vs. Aliens (リンカーン VS エイリアン Rinkan Basasu Eirian), is a 2015 turn-based strategy game for the Nintendo 3DS handheld video game console. The game was developed by Intelligent Systems and published by Nintendo.

The game is played as a turn-based strategy game, controlled in the style of a third person shooter, similar to the Valkyria Chronicles series. The gameplay involves a team of characters controlled by the player known as the "Agents of S.T.E.A.M." facing off against an opposing team of alien invaders. Both teams take it in turns to maneuver and attack, with each level split across up to three self-contained battle arena environments. For the player, both attacking and movement requires the use of "steam", a meter that depletes whenever a character moves around or uses their weapon, in the latter case depending on the type of weapon be used. By saving the same amount of steam required for the character's weapon to be used, certain characters can perform "overwatch attacks" during the opponent's turn, letting them attack enemies that wander into their sights with the potential to stun them for the rest of the turn. The opposing alien team however can also perform this strategy. Additionally, each character has a unique special ability that can be used once per level that doesn't cost steam. Before each battle, the player selects up to four characters, more becoming available as the story progresses. Each character has their own unique primary weapon that suit different play styles and strategies while a second sub-weapon can be switched across all characters before each level.

Throughout each level the player can collect gears and medals. Gears are rarer and hidden in each level while many medals are scattered throughout, and can also be gained by defeating enemies, more if they are defeated with overwatch attacks. In between levels, gears are used to unlock "boilers" that can alter stats and amount of steam while medals gain be used to unlock further sub-weapons and can be used at certain points to save the game, heal themselves, or restore fallen allies. If the player collects 100,000 medals during gameplay, a 13th member of S.T.E.A.M is unlocked: A smaller version of the A.B.E called STOVEPIPE (named after Lincoln's hat).