SUMMARY
This is about one month old but FPS Creator (the original 2005 version) is now open sourced and freeware. This offering is not to be confused with the former free version of FPS Creator; What is now being offered is the commercial version of 2005 FPS Creator, but for free. Also, in OT news, they are also making open source and freeware "Dark Basic Pro" which was a programming language designed for quick prototyping of games. So, if Unity3D, UDK, idTech and a lot of other game creation software just don't do it for you... Give FPS Creator a look because all that you need is a fast internet connection and some spare time to take a look at it.
LINKS
https://github.com/LeeBamberTGC/FPS-Creator-Classic - FPS Creator Classic, now open source and freeware.
https://www.thegamecreators.com/post/darkbasic-fps-creator-go-open-sourced - Announcement of the products being open-sourced