directions to boom mirrors

1 question, where can i download a copy of boom, or do i have to buy it?

http://www.teamtnt.com/boompubl/boom2.htm

Dont forget the doomworld source port section for other source ports.
http://www.doomworld.com/classicdoom/ports/

Yeah, keep in mind that BOOM is for DOS, and it's quite old so a lot of its bugs have been fixed in other ports (I just fixed a couple recently in fact O_O ). You'd probably be better off using something else.

ok then, how about other versions?

http://www.zdoom.org/files/lars/63a.cab

Has all the boom features plus more.

notadoomer said:

ok then, how about other versions?

On the Boom page, you will find a direct Windows port of Boom 2.02.

The main present-day Windows ports based directly on Boom are Eternity and Prboom. You might also be interested in a modified version of Prboom that can be found here.

Most modern ports support Boom's additional features though (jDoom being the main exception).