I thought it might be convent to have all of the game manuals for titles that are on the Flashback in a single document, so I made one. For "unreleased" games (Brickout, Blow Out, etc.) I created some simple manuals from the information that's available. A table of contents lists all 60 games, with the names hyperlinked so you can just click on a game and go straight to its manual without having to hunt for it.
If Intellivisiongames.com sticks with text-only game instructions, at least this manual will give people an easy way to access the full illustrated manuals and get the most out of the games and their shiny new console.
At 744 pages and almost 90 MB, the file is big, so I've uploaded it elsewhere. Here's a link to the file: http://tinyurl.com/qhqd7r6
Hopefully some people find it helpful.