JHDev2006/Super-Mario-Bros.-Remastered-Public ? reverse-engineered prompt

Build me a playable Super Mario Bros style fan game in Godot, with the feel of the classic NES games but cleaned up and modernized. I want the core game to support multiple modes, including the original Super Mario Bros, Lost Levels, Super Mario Bros Special, and All Night Nippon Super Mario Bros, plus some new levels and new characters.

It should have good jump physics, familiar side scrolling platforming, and a level editor so players can make and share custom stages. Let people change the look and sound with resource packs too. I’d also like a simple way to run it in portable mode, and make sure it works as a polished desktop game on Windows and Linux.

The game can require an original SMB1 ROM to play, so build around that. If you need to check anything about Godot 4.6 or how to wire up editor features, look up current docs online and follow whatever makes the project work best.