A downloadable NES ROM

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

Böbl is a short game for the NES. Now available as a ROM file.

It was 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!

Download & install instructions

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

For support, consider joining our Discord Server, the community may be able to help you more quickly than we can.

Morphcat Games

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 1.1) 64 kB


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First playthrough was a lot of fun, second playthrough was a lot of fun, now I'm speedrunning it, and I don't want to stop! Great visuals, great music, amazing physics, and no RNG. I love it!

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Hi guys, i recorded a walthrough of Bobl, taking all items. Really, an incredible game!


mmmm, yes. thank you.


Really cool use of sprites to get the water looking natural. I really hope too see a full version, or maybe even a randomizer someday. I had a ton of fun playing this, but I want to know about the frogs...

Awesome game, I love it!

got stuck at one point in the beginning of the game, had to run around in circles and finally decided to  just reset the game altogether and voila! I found what I was missing. haven't made it that far into the game, yet, but I already like it.

based on my experience so far:

✔️ interesting unique game mechanics

✔️ good graphics and animation

✔️ simple & smooth movement and controls

✔️ good sound effects. I'm not a fan of 8-bit music but I'd say the game's music is good.

✔️ good level design (except maybe for the part in the early stage of the game where, if you miss the intended route to be able to progress, you'll find yourself stuck because (1) you're brought too far back for making a wrong turn and (2) too many open paths that loop around so it can be hard to find your way back into the right path again)

I got this running on my wii.  This is so cool

Awesome game! I really love the phisics and visuals. Time to put out my NES.

Will there be a native app version like Micro Mages had?

HOW, the heck this is legendary, how did u make it an rom file thing to make it an NES game!!! its too good... although i never played it, how is it like a NES game...!!! (((:

Nice :)

should this run on console (via flashcart)?

Incredibly fun & impressive game, the physics work very nicely

Very nice. Finished the game but did not get all the duckys. Got lost a few times and had to make a map.

I haven't played yet, but love those water animations :)