birby100's video: Super Mario Kart ZX: Unused tracks

Extreme thanks goes to BlueYoshi-57EML for the info! I would have never known that these existed, or the debug mode, without him! Turns out this fangame has a hidden debug mode that not only reveals a track editor, but two scrapped courses! To enable it, type "pumahue" at any point in game. Then enter any race and press escape to load the track editor. Up and down scrolls through every available track, including two unused ones, and when you're ready press escape to load the selected course. It seems like the devs planned to include Mute City instead of Big Blue at one point, as they not only included its music but also a sped up final lap version. However, it's collision isn't perfect and the AI can't handle one of the turns well. As for the test track, well...it's something! I wouldn't be too surprised if someone used the hidden track editor to make an entire course hack for this fangame.