Just bringing the attention of people here that there was some weird level building game that's on the verge of becoming lost media known as Challenge You.
I was one of the players.
This Godot recreation doesn't do it justice, but it gives you a basic look of how this game played. People made "mazes", and then the upload them. It was very interesting and a bit archaic. You could either play singleplayer, or play it with others, which lead to people making a bunch of hangouts. IT was like Roblox, but much more basic.
Now that the game is mostly lost to time, this is, to my knowledge, the only "good" way of playing it anymore... I don't recall being able to look up or down, nor do I recall some of the music (Funk, Lounge, and Scary are the only ones I remember), makes sense, because I stopped playing at a certain time when I was younger.
The above image was from one particular level that I made when I was little, it was basically just this "gomba" and a jetpack to look at it from different, uh, angles.
I encourage anyone who sees this to explore, play levels and enjoy what this strange thing was. It was primarily aimed at kids, so expect some odd ones out.