This is the unregistered version, saving or starting from a level was not an option. We did this in one sitting.
No continues were used until level 80, the final boss.
Update 2017/04/13: The factor-software.com website is now down, so the original description below may be out of date. Links have been changed to archived versions of what they were.
BOOM was originally released in 1996 by Factor Software (Federico Filipponi). It has since been updated for modern day OS and can be purchased on his website. The unregistered version is available for free.
World 1 – 0:00:02 (0:15:22)
World 2 – 0:16:22 (0:33:51)
World 3 – 0:35:20 (0:54:55)
World 4 – 0:56:00 (1:20:21)
World 5 – 1:21:29 (1:46:42)
World 6 – 1:51:44 (2:15:48)
World 7 – 2:19:47 (2:44:40)
World 8 – 2:46:36 (3:09:49)
The following websites provide the tools and software we use to play these games:
We played version 1.1.4 of the game, and “aim locking” (where an enemy will perpetually fire at a player despite a wall separating the two, giving the other player a chance to kill it) which we used a lot does not work from version 1.2 onward.
We also used to have a lot of fun with a bug which would cause a player to get stuck inside a block if the two players collided in a certain way. This was fixed in version 1.0.1 however, so we could not reproduce it. (Well, partially fixed. 3:10:45.)