New Big Dragon Games Unlimited, I downloaded one of their cheaper adventures. This one is called Assault Against the Menace on the Mountain and for some reason it isn't available for sale on DriveThruRPG. I'm hoping that will change soon
This is written as a low-level (1-3) adventure for "old school" games. As such, everything is super easy to adjust for just about any "close enough" game system.
The real value of this adventure....the reason you should really snap it up if it ever comes up on market, is that this adventure does a great job of introducing some "big" ideas that I think a lot of GMs, myself included, could pick up on to make their own adventures seem so much bigger than what simple level-limits would imply.
When I first read Assault Against the Menace on the Mountain, or more appropriately first skimmed it, I had difficulty believing this was a low-level adventure. There was a lot going on and the BBG at the end, well it is a very Big Bad Guy....
Richard J. LeBlanc, Jr., the author, did a really good job of condensing a lot of extra "stuff" into what is realistically 10 pages. A couple of random tables and a much-needed flow chart allow the players to go a bit "off script" while still keeping the GM in control.