Now let's see how I do looking things up instead of just doing it off the top of my head..
1. I guess I was wrong and you are correct? there are a lot of anomalies out there, though, people showing up on the boards with 2600's that might be frankensteins or manufactured during transitionary phases in stock that have serials that don't seem to match what we know about which types were produced where and when. Sunnyvale h6'ers are actually fairly hard to come by.
2. I guess it's just EASIER with the Jr. or better-understood.
3.
http://www.cheeptech...s.shtml#themods has non Jr. video mods tested and collected by Nate strum
4. Sentinel yes and the unreleased one is atari shooting gallery. Actually, I bet it would be pretty hard to hack crossbow into a lightgun game; but if it could be done, then TONS of games could be hacked into lightgun games. missile command would be the next obvious one.
5.http://en.wikipedia.org/wiki/Starpath_Supercharger the wiki for the SC shows the model I own. As you may have figured out, it's possible to load ANY program via wave sound through this thing, which is sort of a modem in a way. You could convert all of your ROM's into WAVs, put them on a cd or maybe 78 RPM record, and load up the ol' 2600 with just a crank of your victrola. There's a little program called bin2wav or something to do this.
6. Wikigaming lists the kid vid voice add-on and the gamebrain as well as the foot craz and the MB "add-ons" which were really just glorified joysticks. There IS the good ol' booster grip, not listed there, which adds a second button! Even humble me has one of those.
7.
http://www.digitpres...read.php?t=1382 This old thread on DP seems to indicate that their were 12 PGP-1's made? And that they were sold only through the mail? It was made by answer, who did gauntlet and malagai, pretty hard to find themselves. Sounds like there are more than 12 to me, if there are two different models. Your best bet would be to try and track down someone who used to work for answer, if their list of employees is available, and see if they would enjoy the attention or not.
8. Not much of a hardware guy but I'd still say no after looking around for a while.
9. 97mm x 81mm x 20mm , someone posts somewhere. Internally, well, get out your calipers and your combat cart.
10. I just asked in the harmony forum how many have been sold. Keep in mind that the harmony cart is a Great product and very popular; a hardware add-on is not likely to be anywhere as popular, especially if it has limited game support or is expensive. Sales for the atarivox might be a better indicator, now that I think about it. Basically anything you do has to be a labor of love; you'll be very lucky if you make minimum wage on any project after all the time you put into it, then the cost of manufacturing a small amount of complicated electronics product for a niche market.
11. Wikipedia does; so do we. It lists "rebranding" at least, the zellers games
12. Hm. we have some, wiki has some... we don't really even have a standard for what constitutes an official homebrew release. does it have to be on cart? Do hacks count if they change a lot?
13. A LOT of good ones.
jr pac man - good
solaris - great
california games - great
kungfu master - good
midnight magic - good
river raid 2 - ok
cruise missile - bad
desert falcon - don't know
skate boardin - ok
realsports boxing - don't know
save the whales - ? didn't know existed
seahawk - bad
spiderdroid - bad
taskforce - bad
tomcat f14 - not my thing
off the wall - don't know
radarlock - good
roadrunner - don't know
secret quest - Really interesting, pretty good
bmx airmaster - good
double dragon - decent! people hate it but i find it quite playable
pete rose baseball - good!
rampage - good
xenophobe - ok
sentinel - never played
ghostbusters 2 - don't know
my golf - don't know
fatal run - don't know
ikari warriors - good
klax - good
motorodeo - good
note that motorodeo and ikari warriors were R10's for some time until a stash was discovered; they should be available relatively cheaply now.
14. Apparently there is a standalone that does four player atari football which is fairly hard to find. Hm.