What is BOOM, anyway?
BOOM is an enhanced version of the DOOM game executable, that TeamTNT has been working on since the DOOM source code was released in December 1997. The main effort in BOOM was to remove limits and bugs, and add new functionality for level authors. Our philosophy has been that though playing the old levels with nifty features is more fun than playing them without nifty features, the real key to DOOM’s longevity has been the plethora of wonderful add-on levels that have been produced. The BOOM engine releases wad authors from many of the limits that DOOM imposed on them, and frees them to make excellent new environments for the players to enjoy. BOOM is freely available from this site–see the “Go Get It” page.