Hey everybody especially genesis fans. I have had my system for awhile and have been trying to collect games for them. At this point i am just trying to get games but i love the ones in the boxes. Do you know of any sites that are good sega references for what is in complete game boxes ? Also if there is a list of how many copies of each game were made that would be awesome lol. 

Well right now I am trying to play through The Jungle book. It's getting kind of hard lol. 

In nearly all cases (no pun intended) Genesis games only came with the cartridge and the instruction booklet. Sometimes you'd get something extra, but it'd either be advertising for other products and not really unique to the game, or some card or other to fill out if you could be bothered.
 
Also, this list might be helpful.