Kaettekita! Gunjin Shougi: Nanya Sore!? (帰って来た！軍人将棋なんやそれ!?, lit. It's Back! Japanese Military Chess: What Is That!?) is a video game adaptation of the board game Gunjin Shougi, which plays more similarly to the Western board game Stratego than shougi itself.
Each player has a set of pieces that consist of various military ranks. The objective is to either capture the opponent's flag or take out all of the opponent's pieces. Both players can only see their own pieces until their pieces directly make contact. Once that happens, the pieces that make contact are revealed to both players, and the one with the higher rank wins and takes out the piece. There are also mines and missiles, some with nuclear warheads, that can respectively affect all but one rank or affect multiple spaces at once.
Here, TaoTao would rather not play any games of Gunjin Shougi and instead opts to exploit a DPCM bug that's also in Super Mario Bros. 3 to corrupt the system memory and skip straight to the credits and the special message given by the developers. You can read more information on how this exploit was done on this page.
The primary movie file for this publication mutes the game due to how the RAM was initialized by the emulator. The encodes for this tool-assisted speedrun were made with a movie file that has the RAM initialized with all zeros, allowing for the sound to be played.