Contra 4 - Bonus Content

Bonus Content

In addition to the main game, Contra 4 contains a slew of extra features under "Bonus Content" in the main menu. The game begins with the "Museum" already available, but other contents are unlocked by completing the stages in "Challenge Mode". The bonus content are as followed:

• Classic Contra - Emulates the original ROMs of Contra and Super C for the NES. Both games can be played with the original resolution or fit to the DS' screen. These two games cannot be played with another player via ad hoc, which means they are one player only.
• Museum - The museum is a virtual gallery containing packaging artwork (both, domestic and overseas versions) and screen shots of all previous Contra games, as well as the regional titles for each game (although, the Japanese title of the arcade version of Contra is incorrectly listed as Gryzor). There's also an unlockable section containing assorted illustrations and promotional materials from the series, including conceptual artwork.
• Comic Books - There are two unlockable comic books in the game. The first is an adaptation of Contra III: The Alien Wars by illustrator Atsushi Tsujimoto and written by Nobuya Nakazato, which was originally published in 2002 in the official Contra: Shattered Soldier website. The second is an adaptation of Contra 4 also illustrated by Tsujimoto and written by producer Tomm Hulett, which was created specifically for this game.
• Sound Test - Listen to the game's music and audio score.
• Interview - An interview with Nobuya Nakazato (the director of Contra III, Hard Corps and Shattered Soldier, as well as the producer of Neo Contra) detailing his involvement with the series.