Hello and welcome!
I just want to make your sure that I was about to reject this as a spam (Yes, spam bots had post their mess in the very similar look like you done). But after reviewing the thing deeply, I decided to approve.
Please, anybody who register here, introduce yourself properly, that's would be easier for moderators team to not confuse you and random spammer.
P.S. Just in a case, I'll preserve your thing at the SMBX Archive at SMBX2 section.
Added after 22 minutes 6 seconds:Just a first note: I made a look on the content, and some cases are inoptimal. You used large audio files without proper looping and content optimizations, and you grown the gigabyte of the stuff.
Just a pro tip: it's enough to compress OGG files with the quality of 5 or 4. Just listen result to ensure content isn't so damaged. (Hearable damage usually appears somewhere at 4, 3 or lower). And, you can use loop tags to make a seamless looping of the middle part of the song. There are a lot of manuals on how to make that. I do have one too:
https://wohlsoft.ru/pgewiki/How_To:_Looping_music_files, You might take a look and optimize your content.
Just don't bloat episodes data size without real necessary (like, thousand unique levels and thousand variants of custom graphics, etc). You have only 50 levels, and just get the gigabyte? Okay, I checked the thing deeper, all the audio files just takes around 243 MB. However, I found that you used huge background pictures (every of them takes 4~7 MB of size, wow). Isn't better to make smaller but keep them look nice as your idea is? Please don't spit on general optimisation and rationality use. Not everybody has Core i42, MegaUltra4K screens, 1 TB RAM, RTX9999 SUPER, so, spit on optimisation will hurt even TOP-level PC users, seriously.

P.S. No, gigabyte per game is not okay. Modern games often suck by the plot and general quality. Having over 80GB of game data is not okay. Absolutely. I mean, large data size NEVER means the "game is awesome" (Only exception that "Dark Messiah of Might and Magic" is awesome game that loved by my brother even it takes 7 GB of the space. Actually nobody beated the quality of it's battle system and other stuff).
Added after 25 minutes 47 seconds:P.P.S. My conclusion: general overall idea looks super, but it needs more work.