I'm very glad you enjoyed!
I'm not a super techy person, so I have no idea if this explanation will make sense. I made the game in Godot and Godot works in nodes. To make the levels, I made a node for every single letter of the alphabet with accurate collision. I made another node of some letters that would be bouncy, fade, float, etc. Then, I have this HUGE dictionary with all the dialogue. I made a script that scans the dialogue string and places in every letter in the right position, as well as the finish cube thing. If a certain level has the special character activated for a letter, instead of placing the normal letter, it adds the one with special characteristics. This saved a bunch of time so I didn't have to individually place the letters myself, I had a script do it for me. Sure this had some limitations, but I very much like what the finished product was.
Thanks for playing!