FNF Brotherly Rivalry! Mario vs Luigi

FNFBrotherly Rivalry:Mariovs Luigi - A Wacky Rhythm Showdown

Get ready for a hilarious face-off inFNF Brotherly Rivalry, a fun-filled Friday Night Funkin’ mod featuring the iconic Nintendo bros, Mario and Luigi! Based onSuper Mario & Luigi: Superstar Sagasprites, this mod brings a comedic twist to the classic FNF formula, pitting the brothers against each other in a musical battle like no other.

This mod is short, sweet, and packed with charm — perfect for fans looking for a quick, entertaining experience. Whether you're a long-time FNF player or just dropping in for some nostalgic beats, this one’s got character.

Gameplay & Highlights

In this mod, you play as Mario, challenging Luigi to a sing-off using the classic Superstar Saga art style. The mod oozes personality, with humorous animations and quirky lyrics that bring the sibling rivalry to life. The track itself is based on a viral Twitter creation byoctigone, reimagined here in full FNF glory.

• Hilarious Vocals: Prepare to laugh with the over-the-top and comical voice work
• Nostalgic Art Style: Sprites fromMario & Luigi: Superstar Sagagive it a retro feel
• Quick & Fun Playthrough: A lighthearted mod that won’t take up much of your time

Developer Story

The FNF Brotherly Rivalry mod was made in just1-2 daysas a labor of love by a small team. It was built for fun and to celebrate theMario & Luigiseries, with only one person involved in development (aside from the original musician). Despite its short development window, the mod delivers a solid and entertaining experience that stands out in the FNF community.

Credits & Contributors

Mod Team

• ChaiGuy– Handled nearly everything, from coding to implementation
• octigone– Original music creator
• Aspect– Charter

Special Thanks

• bbpanzu– For main events like Kaboom and camera control
• RexDoesStuff– For extra silly mod events
• Kris!!!– As a tester
• SFe– For being a cool guy (and contributing!)

FNF Engine Team

• Shadow Mario– Main programmer
• Yoshubs– Assistant programmer
• River Oaken– Main artist/animator
• bbpanzu– Former programmer
• Additional contributions from the open-source GitHub community

Original FNF Creators

• ninja_muffin99– Lead programmer
• PhantomArcade3kandevillsk8r– Artists
• kawaisprite– Composer
• And all the contributors to the FNF GitHub project

How to Play

Want to jump in on the action? You can playFNF Brotherly Rivalryright in your browser! This web-optimized version makes the mod more accessible, whether you're on a Chromebook, Mac, Linux, or just have a low-end PC. No need to download or install anything — just hit play and start rapping!

⚠️Note:This online version may have slight differences or missing mechanics compared to the original PC mod. For the full experience, consider downloading the mod for PC.

Final Thoughts

FNF Brotherly Rivalry is a delightful, short mod that adds a unique flavor to the FNF universe. With its charming visuals, funny lyrics, and fast-paced rhythm, it's a great pick for a quick play session. If you're a fan ofSuperstar Sagaor just want to see Mario and Luigi go head-to-head in a freestyle battle, this mod is definitely worth checking out.