That's Luigi Bros., not Super Luigi Bros.This isn't an exact answer to your question, but there's a perfect recreation of Luigi Bros here.
Is this also available on New Super Luigi U? I happened to buy it a few days agoThat's Luigi Bros., not Super Luigi Bros.
He's talinkg about the mirrored version of SMB with only Luigi playable with his special game physics.
I have tried extracting it from both 3D World and NES Remix with no luck at all.
The game seems to not be in the usual .bin format, which leads many of us to think that maybe Nintendo is using some sort of patch file along with the clean SMB ROM to create the game on the fly.
Mdny others have tried too, but no luck on getting it so far. :/
I don't know if RAM dumping with TCP Gecko might be of any good.
I can't remember to be honest.Is this also available on New Super Luigi U? I happened to buy it a few days ago
You can unlock it with NSMBU?3d world only has the Luigi Bros. game as a bonus, it looks pretty similar to what Blundermann posted.
Also, @VinsCool, a Super Luigi Bros save will unlock it. But if you saw the Luigi horked thread, I'd be weary about trying it with Gx2