I'm a tad confused on this... you're making a 3d version of a 2d map? Why do you feel you have to pay for this? I'm not a lawyer or anything, but I'm fairly certain this is a pretty clear example of a derivative work. This is even less of an issue if you don't intend on using the tileset. Secondly, if you're referring to SSCX Chaos/League zone, then no one there can rightfully claim ownership of ANY map currently in use. The individual structures have been recycled from maps all over SS, dating back ages. If the tileset is also considered part of the map you'd be purchasing, then it's even more of a cluster!@#$%^&*. Tilesets, much like the map, have been recycled and compiled into whatever works for the map. It's pretty rare to see anyone make a fresh tileset these days. !@#$%^&*, even some of MY tiles are in use in that zone. Honestly, this is a very noble thing for you to do and all, but you'll be hard-pressed to find anyone who can legally or ethically claim ownership of the maps used throughout most of this game.