Ironclad: Tesshou Rusha (known in Japan as Choutetsu Brikin'ger, or "Super-Iron Brikin'ger") is a 2D side-scrolling shoot-'em-up developed by Saurus and published by SNK for the Neo Geo CD exclusively in Japan on September 20, 1996.
One of the few games to be released on the Neo Geo CD that were not originally released for the original Neo Geo (both MVS and AES), Ironclad is a traditional shoot-'em-up combining sci-fi and steampunk themes.
Along with the use of branching paths (with multiple endings) and the lack of a lives system (instead using an energy gauge), the game is notable for its core mechanic: the "Robot" helper system. Each player has a large helper Robot (the Ironclad) that can be attached or detached from the main ship and serves many purposes (from augmenting the ship's main attack and shielding, to deploying as a separate turret, being thrown forward for a powerful assault, or causing a screen-clearing detonation). The ship, along with the Robot, can change their arsenal using power-ups.
While the game was not released in arcades, it did have a prototype Neo Geo "location test" version that was later used for the game's digital re-release for the Wii (as a Virtual Console title) by D4 Enterprise in Japan (on November 24, 2009), North America (on April 5, 2010), and Europe (on March 12, 2010). This version was later included in some Humble NEO GEO Bundles by DotEmu starting in late 2015 for the PC, Mac, and Linux (both downloadable, with ROMs included, and on modern browsers) and was later released separately on October 5, 2017 via GOG.com.