Retro Games pixel controller logoRetroGames
HomeAll GamesBlog
Game Consoles
NES
FDS
SNES
Game Boy
Game Boy Color
Game Boy Advance
Nintendo 64
Nintendo DS
Master System
Game Gear
Genesis
SEGA 32X
Sega CD
TurboGrafx-16
PC Engine CD
Atari 7800
Atari Lynx
Atari Jaguar
PlayStation
Arcade
WonderSwan
Neo Geo Pocket
Free Online Games
Retro Games pixel controller logoRetroGames
RetroGames

Retro Games

Play 30,000+ free retro games online - NES, SNES, N64, GBA & more classic games instantly in your browser!

Explore

  • Home
  • All Games
  • Blog

© 2026 • Retro Games All rights reserved.

  • Privacy Policy
  • Terms of Service
Super Mario Bros. Two-Player Hack (Shared Lives)(30 KB)
Super Mario All Stars NES

Super Mario All Stars NES

Hudson's Adventure Island (USA)

Hudson's Adventure Island (USA)

Kirby's Adventure (USA)

Kirby's Adventure (USA)

Mega Man (USA)

Mega Man (USA)

Kirby's Adventure (USA) (Rev A)

Kirby's Adventure (USA) (Rev A)

Mega Man 2 (USA)

Mega Man 2 (USA)

Tiny Toon Adventures (USA)

Tiny Toon Adventures (USA)

Mega Man 4 (USA)

Mega Man 4 (USA)

Mega Man 6 (USA)

Mega Man 6 (USA)

Mega Man 5 (USA)

Mega Man 5 (USA)

Mega Man 3 (USA)

Mega Man 3 (USA)

Metroid (USA)

Metroid (USA)

Circus Charlie (Japan)

Circus Charlie (Japan)

Contra (USA)

Contra (USA)

Tetris (USA)

Tetris (USA)

Mike Tyson's Punch-Out!! (USA)

Mike Tyson's Punch-Out!! (USA)

Battle City (Japan)

Battle City (Japan)

Godzilla - Monster of Monsters! (USA)

Godzilla - Monster of Monsters! (USA)

Duck Hunt (World)

Duck Hunt (World)

Final Fantasy (USA)

Final Fantasy (USA)

Punch-Out!! (USA)

Punch-Out!! (USA)

Tekken 3

Tekken 3

Castlevania - Symphony Of The Night

Castlevania - Symphony Of The Night

Sonic & Knuckles + Sonic the Hedgehog 3 (World)

Sonic & Knuckles + Sonic the Hedgehog 3 (World)

Kirby Super Star (USA)

Kirby Super Star (USA)

Cadillacs & Dinosaurs (930201 etc)

Cadillacs & Dinosaurs (930201 etc)

Street Fighter II' - Champion Edition (YYC bootleg set 2, 920313 etc) [Bootleg]

Street Fighter II' - Champion Edition (YYC bootleg set 2, 920313 etc) [Bootleg]

Super Smash Bros. (USA)

Super Smash Bros. (USA)

Mega Man X4

Mega Man X4

Silent Hill

Silent Hill

Crash Bandicoot 2 - Cortex Strikes Back

Crash Bandicoot 2 - Cortex Strikes Back

Penguin Brothers (Japan)

Penguin Brothers (Japan)

Street Fighter II' - Champion Edition (street fighter 2' 920513 etc)

Street Fighter II' - Champion Edition (street fighter 2' 920513 etc)

Yu-Gi-Oh! - Forbidden Memories

Yu-Gi-Oh! - Forbidden Memories

Mega Man X5

Mega Man X5

EarthBound (USA)

EarthBound (USA)

Sonic the Hedgehog 2 (World) (Rev A)

Sonic the Hedgehog 2 (World) (Rev A)

Sonic Classic Heroes (2022 Update!) (v0.15.03d8)

Sonic Classic Heroes (2022 Update!) (v0.15.03d8)

Dragon Ball Z - Supersonic Warriors (E)(Rising Sun)

Dragon Ball Z - Supersonic Warriors (E)(Rising Sun)

Donkey Kong Country (USA)

Donkey Kong Country (USA)

Bloody Roar 2: Bringer of New Age

Bloody Roar 2: Bringer of New Age

Neo Bomberman

Neo Bomberman

Kirby And The Amazing Mirror (E)(Rising Sun)

Kirby And The Amazing Mirror (E)(Rising Sun)

Sonic 3 Complete

Sonic 3 Complete

Top Gear (USA)

Top Gear (USA)

Parappa the Rapper

Parappa the Rapper

Metal Slug X (USA)

Metal Slug X (USA)

Sonic Classic Heroes

Sonic Classic Heroes

Crash Bandicoot - Warped

Crash Bandicoot - Warped

Donkey Kong (US set 1)

Donkey Kong (US set 1)

Pokemon Radical Red v4.0

Pokemon Radical Red v4.0

Jojo's Bizarre Adventure

Jojo's Bizarre Adventure

Snow Bros. 2 - with new elves

Snow Bros. 2 - with new elves

Crash Bash

Crash Bash

Metal Slug 2 - Super Vehicle-001/II (NGM-2410) (NGH-2410)

Metal Slug 2 - Super Vehicle-001/II (NGM-2410) (NGH-2410)

Pac-Man (Midway)

Pac-Man (Midway)

Pokemon Unbound v2.1.0

Pokemon Unbound v2.1.0

Kirby Super Star Ultra (USA)

Kirby Super Star Ultra (USA)

Resident Evil 3: Nemesis (U)

Resident Evil 3: Nemesis (U)

Cooler Sonic in Sonic 3 & Knuckles

Cooler Sonic in Sonic 3 & Knuckles

Spyro the Dragon

Spyro the Dragon

Bubble Bobble

Bubble Bobble

Tomodachi Collection (English)

Tomodachi Collection (English)

Super Mario All Stars NES

Super Mario All Stars NES

Hudson's Adventure Island (USA)

Hudson's Adventure Island (USA)

Kirby's Adventure (USA)

Kirby's Adventure (USA)

Mega Man (USA)

Mega Man (USA)

Kirby's Adventure (USA) (Rev A)

Kirby's Adventure (USA) (Rev A)

Mega Man 2 (USA)

Mega Man 2 (USA)

Tiny Toon Adventures (USA)

Tiny Toon Adventures (USA)

Mega Man 4 (USA)

Mega Man 4 (USA)

Mega Man 6 (USA)

Mega Man 6 (USA)

Mega Man 5 (USA)

Mega Man 5 (USA)

Mega Man 3 (USA)

Mega Man 3 (USA)

Metroid (USA)

Metroid (USA)

Circus Charlie (Japan)

Circus Charlie (Japan)

Contra (USA)

Contra (USA)

Tetris (USA)

Tetris (USA)

Mike Tyson's Punch-Out!! (USA)

Mike Tyson's Punch-Out!! (USA)

Battle City (Japan)

Battle City (Japan)

Godzilla - Monster of Monsters! (USA)

Godzilla - Monster of Monsters! (USA)

Home/NES

Super Mario Bros. Two-Player Hack (Shared Lives)

Super Mario Bros. Two-Player Hack for NES focuses on tight traversal, pickups, and careful recovery after mistakes. Check the build details, learn the controls, and play directly in the browser.

Published
1985
Added
2025-12-22
Platform
NES
Super Mario Bros. Two-Player Hack (Shared Lives)
4.9
Rating
65 votes
Tags
Mario
Platformer
Co-op
NES
ROM Hack

Overview

About Super Mario Bros. Two-Player Hack (Shared Lives)

Super Mario Bros. Two-Player Hack (Shared Lives) is a creative and nostalgic modification of Shigeru Miyamoto's 1985 Nintendo NES classic, transforming it into an exciting and chaotic 2-player cooperative romp through the Mushroom Kingdom. It takes the iconic single-player sidescrolling platformer and cleverly hacks it to support two players on screen at once, sharing a common pool of lives and Mario power-states for true simultaneous play from 1-1 to the last warp zone.

  • Two Players, Simultaneous Chaos: Rediscover the classic levels of the original Super Mario Bros., but now with a friend playing alongside you on the same screen! This ROM hack ingeniously allows both players to tackle Bowser's minions together, rather than taking traditional alternating turns.
  • True Cooperative Competition: Every jump, pipe entry, mushroom grab, and coin collected matters for the cooperative score and shared lives count. Play to be the hero who rescues the princess or enjoy the hilarious sabotage of bumping your partner from a cliff, creating memories unique to multiplayer mischief.
  • Authentic NES Retro Experience: Embrace 8-bit nostalgia! The legendary pixel graphics, unforgettable chip-tune theme by Koji Kondo, and classic world navigation are all preserved faithfully. It feels like the original SMB you remember, just now more social and wildly unpredictable.

What stands out

This hack is a must-play for retro gaming fans because it breathes new, hilarious life into a perfect, well-worn classic. It delivers laughs, friendly competition, and shared frustration perfectly suited for co-op retro gaming nights, enhancing the original's charm without compromising its foundational platforming appeal.

  • Unique Nostalgia Multiplier: Experience genuine childhood nostalgia through a new filter of cooperative (and competitive) discovery. The blend of fondly known level layouts with the chaotic energy of a second player is utterly engrossing for retro heads.
  • Strengthen Retro Skills & Strategy: Mastering this hack isn't just about your own run; it introduces new dimensions of strategy. Coordinate power-ups, decide which enemy threats to flank, and even sacrifice a life for the team's victory—a perfect deep cut classic for players seeking to level up.
  • Classic Gaming Meets Modern Socializing: This title offers a unique social gameplay style that can stand alongside today's top multiplayer games. Its pure, skill-based cooperative chaos with zero modern monetization makes it pure, vintage fun, proving a timeless design can teach modern developers a thing or two.

Play notes

Diving into this timeless classic is both nostalgic and thrilling with a twist. To fully embrace this multiplayer adventure, here's a quick guide to get you playing in true retro style.

  • 1. Classic Controls Setup: Navigate the pixelated wonders using classic keyboard controls. Player 1 uses Arrow Keys for direction + Z key to run and X to jump. Player 2 uses WASD for moving + G to run and H to jump, perfect for NES-style rapid-fire platform action. For true analog style, a controller setup is also encouraged using your go-to USB input to match retro authenticity.
  • 2. Navigating Multiplayer Chaos: Choose '2 Players' to dive into co-op. Unlike the mainline classic, gameplay flows together in real time with both Marios running one overworld. You start sharing both a total number of lives and power-ups gained over the journey. Use the 8-direction world map to select levels and warp zones, building joint skill towards the ultimate rescue mission against the dastardly King Koopa, Bowser.
  • 3. Master Shared Lives Strategy: Play smart: your goal is to get at least one Mario all the way to 'Your princess is in another castle!’ across 8 worlds, and a key innovation lives in coordinating lives. Each time either player runs out while shared reserves survive, they'll respawn instantly onto the screen mid-gameplay. Plan attacks, bounce off enemies expertly, nab 1UPs when popping off enemies sequentially, but avoid those bottomless pits by taking the high ground.

FAQ

How does the 'Shared Lives' mechanic work in this hack?

Both players share one common pool of 'Extra Marios' (lives). When either player takes a fatal hit, they will lose a life from the shared pool. As long as the pool isn't empty, they will instantly respawn to rejoin their partner on screen, keeping the chaotic action going!

Do players share powers (like Fire Flower / Super Mario)?

Absolutely! Similar to lives, the Mario power-up system is shared. If one player gets hit and reverts to small size for both, you both are impacted; and when another mushroom or fire flower spawns as a coin block, whichever Mario grabs it benefits the team. Think of this as a great strategy for coordinated powerup hunting and sharing across worlds.

Can this be a competitive game as well as co-op?

Yes! True friendships get a playful duel here. Since player sprites interact physically and can easily be nudged, you’re free to turn into a hilarious Mario vs. Mario competition in real-time - knocking each other into foes and off moving platforms if you feel mischievous between collaborative moments.