CoffeeJohnny | Super Mario Bros. in 16:9 Widescreen | World 1-1 @coffeejohnny2337 | Uploaded February 2018 | Updated October 2024, 58 minutes ago.
See also full SMB any% speedrun in 16:9! youtu.be/0LAMf2virno
Note: It's not a rom hack or game played on a special emulator. Just a few hours of video editing.
Has some minor flaws (especially re-animated goombas) but it's my first attempt in such editing. Made out of curiosity how a widescreen version of SMB would look like.

More retro games in widescreen:
youtube.com/playlist?list=PLhlTGYoevkG7fsFCiHCE4oinut2QPq62f