A downloadable NES ROM

Download NowName your own price


- NES ROM, playable on a variety of platforms via emulation

Böbl is a physics-based metroidvania for the NES. Now available as a ROM file.

It was originally made in 1 month for NESdev compo 2019.  We invite you to check all the other games from NESdevcompo 2019.

An OST release will follow very soon... Stay tuned!


You're a bubble, water is your friend and solid blocks kill you. Hold A to dive, then release and let buoyancy handle the rest. Let's find all the lost duckies!


 More info in the README that comes with the download.

Download & installation

Download the ROM and run it in an NES emulator such as Nestopia or Mesen

For support, consider joining our Discord Server.

Morphcat Games

Follow us on twitter: @morphcat

Code and audio: @miau6502
Graphics and level design: @NicolasBetoux


Download NowName your own price

Click download now to get access to the following files:

Böbl ROM (Version 1.2) 50 kB
Böbl ROM (Version 1.1) 64 kB


Log in with itch.io to leave a comment.

Viewing most recent comments 1 to 40 of 62 · Next page · Last page

What a great little game!

Cool concept, Clear visuals, nice Soundtrack, precise control, easy to learn hard to master, short but sweet and this runs on an real NES, very impressive!


Hi i was wondering if you would like to make physical NES carts , let me know, i do this for a living. Id be more than happy to work with you. We can work togheter and be partners . I have a shop on etsy and i would love to sell this game for you. I have my own  high quality 5V circuitry .

Get back to me if you are interested, i can give you a cut everytime i sell one. 

Heres my email address


Once i have multiple developers working with me i will create a website to make this even more official and to push more sales

thanks for your time and let me know if you have any questions

Yo, this game is super rad! The controls are silky smooth and the graphics are more polished than lots of official NES games.

Thanks for the good time!

Hello! A few years ago I found this video game on a page that is dedicated to uploading homebrew games and thanks to this game I fell in love with homebrew games! thanks dude!

I found all 8 ducks! Thanks for the fun challenge and lovely game :)


I had a lovely time playing Böbl! What a fun game, and impressive you managed to make it for the NES!

What a nice and enjoyable game!!. I was a bit sad tho, to find out it's kind of short, getting to the end by "mistake" (trying to find the ducks I was missing). It's amazing how such a "minimalistic" game, with simple mechanics can achieve to give you a great afternoon.

Very nice, but sometimes difficult game of skill that we just discovered by accident. Our German-language review can be found in our recorded livestream starting at 06:24:20. Subscription to our YouTube or Twitch channel is welcome. 🙂

For some reason the 1.2 doesn't work on 3DS (exported to .cia), only 1.1 works. I'm using "New Super Ultimate Injector"

I had a lot of compatibility issues with the injector and with VirtualNES (this game literally crashes it). RetroArch works with this and a couple other games just fine for me. My original 3DS is too slow on everything except for QuickNES, but a new 2DS or 3DS may be able to use whatever core.
This is the guide I used. Trying to install through the Universal Updater seems to not actually install the application...


Wow! What a great game! I've never owned a NES back in the days but it's a lazy weekend, beautiful weather outside and I was sitting on our balcony with my Anbernic RG405M, looking for something new to play and nust found this game. I've watched the video and had to buy the game. I love it, thank you for the great work! 😊 👍

This is a fantastic game

Very nice game. So cool. Bravo!

super nice game.


I promoted your game on my site.



i glitched the game and I’m playing it on Provenance 

This game was really fun! My favorite part was the cloud section, wish I could hear that cute music in at least a few more screens

@shinystar: Yes, sadly I had to use Retroarch for the first time on my NES Classic MINI. No longer nativ running it seems.

The 1.1 version works on my EZ flash omega but the 1.2 version doesn't

Same here with 3DS

great game i love how it was a little hard!


I tried to study the game as much as I could. By the way, the site speaks Turkish.

The game version 1.1.
(1 edit)

I'm having trouble breaking blocks and timing my bounce with the iron bobl.

(2 edits)

still the best game on the NES after all these years... 

The Böbl Rap

I know I've already played through the entire game, but with this new update I think it's absolutely necessary to do it again

I already played this game before seeing this lol

now I know ware it came from

I have been playing this game for a while now, and I simply LOVE the way its made! The level design is so amazing.. I was about to start drawing my own map of the world last time I took a break from it.. Btw.. Is there such a thing I could purchase maybe...?

This bubblevania is awesome!!!

Here my review in spanish: https://retroorama.blogspot.com/2021/06/indie-review-bobl.html



If I wanted to make a physical copy of Bobl, will the Broke Studios unrom pcb work just fine, and will it still function on the Retrousb AVS?



I really love how that levels created to this game. 💙

This game is so cool! the level design is so smart, the art is so nostalgiac, the music is fuggedaboutit :italianhands:. I can't stop playing! Great job! :)

New from the team behind micro mages: Not echo the dolphin! Only for nes.*

*It is only a joke so don't be angry also it is completely different I am sorry if i hurt your feelings


Please start a funding page so this demo can turn into a full fledged game!! It deserves.

(2 edits)

this game rocked!

I collected all the ducks and saw a frog but I cant help but feel like im missing something, maybe to the right of the exit pipe...

edit: 2 frogs, i got that orange frog area duck in entirely the wrong way lol

for anyone playing this on a computer and wondering where the fuck the "B" "A" and such buttons can be found, namely what the controls are in general as there is no menu explaining them:

on my german qwertz keyboard, I had to use 3 buttons:
the L key (yep, I mean the letter L there),
the one with , and ; on it  and
the one with . and : on it

on my keyboard, the last 2 ones are directly below the normal L key.

you will also realize that despite looking like they do the same, 2 of these buttons are used to dive but one of them has some certain effect on the environment. what I mean will make sense once you get the corresponding upgrade and wonder why tf the normal dive doesnt do. then you will wanna use that second key instead :-)

nice game, the world is quite big too so i kind of get lost a lot. finally made it to the sealbomb upgrade and am stuck there cause I dont know how to use it. the normal jumping in the air and landing on the blocks doesnt do anything :-/

beat the game, was quite a nice game once you got past the first upgrade.
after that the world layout became more and more obvious

I love Morphcat's Games <3

This game is so beautiful! I love the water effects, 

You have my respect for ever !

Just finished it, fantastic game ^^

Viewing most recent comments 1 to 40 of 62 · Next page · Last page