Kaettekita Mario Bros. is an action platformer game for the Family Computer Disk System.

This originally was a small upgrade to the original Mario Bros. Kaettekita Mario Bros. (Also known as Return of the Mario Bros.) was one of the few Famicom Disk System games available exclusively from the Famicom Disk Writer and not sold separately. In Kaettekita Mario Bros., Mario and Luigi gained the ability to change direction slightly in mid-air, and the graphics were tweaked to look more like the arcade version. Taking advantage of its disk format, the game let you register your name and saved the top five high scores.

Kaettekita Mario Bros. appears to have been sponsored by Nagatanien, a Japanese food company. After selecting the number of players, the game displayed one of three short cut-scene advertisements for Nagatanien products, including one for Super Mario Bros. 3 furikake (dried food sprinkled over rice). The first time you lose all your lives in the “Nagatanien World” mode, you play a slot machine for the chance to continue where you left off with all your points; match two Marios or Luigis for one extra life, three Marios or Luigis for two extra lives, or spell out Naga-tani-en for a whopping four extra lives.

This is a complete translation patch for Return of Mario Bros. A translated manual is also included with the patch.

• Database match: Kaettekita Mario Brothers (Japan) (Disk Writer)
• Database: No-Intro: Famicom Disk System (v. 20210111-132854)
• File/ROM SHA-1: AE5941B4262D92E9C3254A86269A6FD56189A129
• File/ROM CRC32: 4D5BFD77
• Headerless