This is what I have and can contribute that may be of some use.
1) Fan made compilation DVD-R of official Bruce Lee directed and shot Game of Death fight out-takes from the Game of Death pagoda fight scenes. I don't remember any of this having original audio, just some music put on by a fan. It has footage not seen on any of the other disks below. These are all aborted takes.
2) Hong Kong Legends Box Set (PAL Region 2); This has all 4 of the Bruce Lee Golden Harvest produced Hong Kong films in great quality. It includes the 2 disc edition of "Game of Death". As an extra, it includes 15 minutes of the edited pagoda fight scene from 1972, 5 deleted scenes from the 1978 film, and some making of documentaries. ("Enter the Dragon" is not on this set, and it was produced by both Golden Harvest and Wanner Brothers. And so that title alone is handled under different distribution contracts.
3) Bruce Lee in G.O.D. (PAL Region 2)
4) Documentary: Biography:Bruce Lee The Immortal Dragon
5) Documentary: Bruce Lee The Man... The Myth I think this is the one with lots of footage of news footage of the funeral.
6) Goodbye Bruce Lee (His Last Game of Death) I believe this is the original post-death exploitation movie (released in 1975) built around Game of Death footage. It predates the official Golden Harvest 1978 Game of Death reconstruction, and stars Bruce Li. Like the 1978 movie, it's story has very little to do with what Bruce Lee had planned out for his aborted version.
7) Bruce Lee, The Lost Interviews
8) Game of Death Two (PAL Region 2) This film has very little to do with the original Game of Death beyond the title. Yet, is a very good movie with enjoyable commentary track.
9) Bruce Lee, a Warrior's Journey This is the holy grail of footage and background into Game of Death. This documentary has the pagoda fight footage with different music. Very good background on Game of Death and what lead up to the making, and tragic end of the Game of Death project, and Brice Lee. His wife had lots of input on this. It's also the most watched Bruce Lee title in my collection next to "Enter the Dragon".
10) "Enter the Dragon" (2-disk Special Edition) This also includes Bruce Lee, a Warrior's Journey as a bonus extra.
11) "Enter the Dragon" Soundtrack CD. You may need this for music.
12) Documentary: The Legend Lives On.
I also have an mpg file of the infamous G.O.D. storyline video/movie. this title should not to be confused with "Bruce Lee in G.O.D.".