Metroid Confrontation was a fangame released by the AM2R guy (Milton Guasti) back in 2010 to show off the engine he made. In 2017, the hacker VitorWYX made a demake in the Metroid 1 engine. It's pretty good (imo, ymmv, etc.). You can find it on RHDN.
Anyhow, I made a map of the demake, and also attached one of the officially sanctioned maps of the original here for comparison's sake.
Enjoy.