Mario Bros.
A landmark platformer game for the NES, Mario Bros. combines tight controls with engaging gameplay. Its enduring appeal lies in the perfect balance of challenge and reward.
- Developer
- Nintendo
- Released
- 1985
- Platform
- NES
- Genre
- Platformer
- Players
- 2P
- Rating
- 4.6 / 5 (1.4K)
- Last updated
Mario Bros. Controls — NES Keyboard Keys
Default keyboard bindings for Mario Bros. on our in-browser NES emulator. Plug in a USB or Bluetooth gamepad to auto-detect mappings, or rebind any key from the emulator settings menu.
| Keyboard | Console button | Typical use |
|---|---|---|
| ↑ | D-Pad Up | Move up |
| ↓ | D-Pad Down | Move down |
| ← | D-Pad Left | Move left |
| → | D-Pad Right | Move right |
| X | A | Primary action (jump / confirm) |
| Z | B | Secondary action (attack / cancel) |
| Enter | Start | Start / Pause |
| Shift | Select | Select / Mode |
Rebind any key from the EmulatorJS in-game settings menu (gear icon → Controls). A connected gamepad auto-maps to the same buttons.
Mario Bros. Longplay & Gameplay Videos
Watch a full playthrough of Mario Bros. on NES before you dive in — recommended for getting a feel for the game's pacing, story beats, and difficulty curve.
Watch longplay on YouTube
"Mario Bros." NES longplay 1985
Mario Bros. Cheat Codes
30 community-curated cheats for Mario Bros.. Tick any to activate them automatically when you click "Play with cheats" — or copy a code into your own emulator.
-
Infinite Lives
SUYSSGSLXTLAVISXTIEG -
Infinite POW Block
SZPIZL0070:03 -
Can't Use POW Block
EUGKVY -
Enemies Die When They Touch You
ANIIOG -
Enemies Stay Frozen From POW Block
EIPGZY -
Enemies Stay Frozen From POW Block (Alt)
EIAKTY -
Infinite POW Blocks
SXKGNIVG -
Infinite Time Bonus Stage
SXKEAESE -
Running into Enemies Kills Them
EOSISYEIAEKSOGGA -
Invincibility
YTOVGAZAAVVIEGVI -
Start With 1 Life
AAISPL -
Start With 6 Lives
IAISPL
Show 18 more cheats Show fewer
-
Start With 9 Lives
AAISPU -
Faster Mario & Luigi
PENGSAAA -
Mega Fast Mario & Luigi
ZENGSAAA -
Coins Kill You!
AEUIUGAG -
Mega-Jumping Mario & Luigi
VYSYAUKY+VYSYPUKY -
Faster Baddies
EZEKEPKZ+ZAEKOPNG -
Mega Fast Baddies
EZEKEPKZ+LAEKOPNG -
Light-Speed Mario
YENGSAAE -
Faster Mario & Luigi
PENGSAAA -
Mega fast Mario & Luigi
ZENGSAAA -
Mega-jumping Mario & Luigi
VYSYAUKY+VYSYPUKY -
Inf Pow Blocks
SXNIIZVG -
Infinite Time In Bonus Round
SZNTPUVK -
Don't Skid At All
KAVGKASA -
Stops Green Fireball From Appearing
AVOTINSZ -
Stops Red Fireball From Appearing
AEETXZPA -
Infinite Lives P1
0048:04 -
Infinite Lives P2
004C:04
External references
Frequently Asked Questions
When was Mario Bros. released?
Mario Bros. was released in 1985 for the NES.
Who developed Mario Bros.?
Mario Bros. was developed by Nintendo, available to play in your browser on RetroGameSpace.
How many players does Mario Bros. support?
Mario Bros. supports up to 2 players, ideal for couch co-op or competitive sessions on the NES.
What type of game is Mario Bros.?
Mario Bros. is a Platformer game for the NES, playable instantly in your browser — no downloads, no installs.
How can I play Mario Bros. for free?
Open this page and click "Play Now" — Mario Bros. runs free in your browser via WebAssembly emulation. No account, no payment, no installer.
Do I need to download anything to play Mario Bros. in the browser?
No. Mario Bros. streams from a public archive into a browser-side NES emulator. Nothing is installed on your computer.
Can I save my progress in Mario Bros.?
Yes. Save states are stored in your browser (IndexedDB) per game, and you can also use any in-game save the original NES cartridge supported.
Does Mario Bros. work on mobile devices?
Yes — the NES emulator runs on iOS Safari and Android Chrome. Touch controls overlay the game; landscape mode is recommended.
Is it legal to play Mario Bros. this way?
RetroGameSpace is a transient caching reverse-proxy and does not host first-party copies of Mario Bros.. Game files are fetched on demand from publicly-accessible archives. You are responsible for compliance with your local laws and the bring-your-own-ROM principle.
