I mainly intend this source file to be a teaching tool for helping mappers learn how I achieved certain effects. However, feel free to use this source as you see fit. If you want to include parts of Island17 in your map, that is OK. Just give credit where credit is due.
A castle map inspired by (but not based on) a real castle i saw in austria. There is a LOT of vertical gameplay, as well as some tight connecting corridors for you shotgun freaks.