I mentioned this in another thread, but I'm working on a $15 ROM pack that will include the cartridge version of the Duck Attack! game binaries, some alternate versions (like the all-green St. Patrick's Day version), a big ol' behind-the-scenes document with early prototype screenshots, the manual, and a game world map.
It's entirely optional, of course. I'll keep a basic version of the game binaries posted online so people can play for free if they're inclined. (And the manual, of course, will stay online, so people can figure out how to play it.)
The ROM pack is really more of an experiment than anything: is there demand for a digital "extras" package on a 2600 homebrew, or are people satisfied with a free binary and/or buying a cartridge? I dunno. But I'm curious.
If you've got any suggestions for other cool stuff that ought to be in the ROM pack, let me know.
Anyway, here's a sneak peak of one page of the game world map.
--Will