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Super Mario Bro-Op

Hack of Super Mario Bros.



Mario and Luigi have defeated Wario but now the brothers face an even bigger challenge… or at least a taller one: Waluigi! Can Mario and Luigi make it through the mazes and hurdles to save the kingdoms? Probably!

∙ Two Player Co-Op

∙ New graphics, levels and music

∙ Unlimited lives

∙ No 1-up mushrooms

∙ [!]-box removes lifts

∙ 20 coins = Star power

∙ Additional stars in invincible boxes.

Navigate through maze-like levels in The Mushroom Kingdom and Sarasaland. A lot of times you need to hit the boxes with dotted lines to make progress.

The game is made with two player co-op in mind but the game is beatable in single player mode, although there may be some paths that are tricky to reach without a second player.

This game features two player co-op, updated graphics and each world has it’s own overworld music.

PATCH Just patch the original Super Mario Bros. rom with the provided IPS patch.

CREDITS ∙ Levels, music production by NesDraug

∙ Graphics by Valo

∙ Special thanks to StudsX for adding the new famitone sound engine to the hack

∙ Extra special thanks to b0b d0e for helping with asm and activating the music on every world!

∙ All cred for the original Two Player Hack goes to: CorpseGrinder and Ti

ROM / ISO Information:

  • rominfo : Database match: Super Mario Bros. (World)
  • Database: No-Intro: Nintendo Entertainment System (v. 20210216-231042)
  • File SHA-1: EA343F4E445A9050D4B4FBAC2C77D0693B1D0922
  • File CRC32: 3337EC46
  • ROM SHA-1: FACEE9C577A5262DBE33AC4930BB0B58C8C037F7
  • ROM CRC32: D445F698



RHDN Hack ImageRHDN Hack ImageRHDN Hack ImageRHDN Hack Image


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User Review Information

I don't usually leave negative reviews, but...

Reviewed By: Creature667 on 21 Mar 2023

This hack was so good, it made me mad that I’m a misanthropic loser and have no friends to play it cooperatively with…

Lolz aside, lets get down to the SRS BSNSS potted meat and French fried potaters of the Romhack at hand. First off, this is a NesDraug jam right here, so it practically reeks with the quality of any fine cheese. Everything that cat touches turns to gold and this cart is no exception, though I’d be remiss to mention that, while NesDraug might have top billing and be the theoretical star of the show here, lets not forget the backing band who co-wrote and played the tunes here. There were several others who took part in making this the banger that it is, and while they may not have their names on the marquee, lets give them the credit they deserve also. Absolute lads all of you. Standing ovation, et al, etc… Alas but cheese is best when paired with something else complimentary of its flavour, and this, quite obviously, if you somehow missed it by the title alone, is best paired with a second player. Perhaps your significant other, or an annoying younger brother. But since this is not 1989 anymore and you and your annoying younger brother are probably in your late 30’s to early 40’s. So lets hope that you’re a lively enough bloke that you keep at least one human being you can classify as a friend around to play some games with every now and again… Because this hack is awesome even in single player mode, but as soon as you fire her up you’ll realize the potential sum of fun that could be added with the simple inclusion of a second player to the equation… If you have EVER remotely enjoyed a Super Mario Bros game in your life, numbered sequel or otherwise, you’d be remiss to pass this one up.

Recommended?: Oh, Good golly, yes!!!

10 out of 10 Starmen…. Would blow into slot and jiggle around until the fun happens again.

~ Creature667

Version 1.1 Recommended - Yes

User Reviews
I don't usually leave negative reviews, but...Creature66721 Mar 20231.1Yes
What a Graphics and MusicThe Great Brazilian19 Mar 20231.1Yes
Wow. Awesome hack!smnarnold17 Mar 20231.1Yes