1. Gamers shall have the right to return games that don't work with their computers for a full refund. Should this also include a state where the user knows that they have an unsupported OS?
2. Gamers shall have the right to demand that games be released in a finished state. Agree
3. Gamers shall have the right to expect meaningful updates after a game's release. Disagree somewhat. If the game is already pristine, which is rare, they don't need any updates.
4. Gamers shall have the right to demand that download managers and updaters not force themselves to run or be forced to load in order to play a game. Valve's Steam is crappy about this.
5. Gamers shall have the right to expect that the minimum requirements for a game will mean that the game will adequately play on that computer. Definitely.
6. Gamers shall have the right to expect that games won't install hidden drivers or other potentially harmful software without their express consent. I believe it should be conveyed before installation if nothing else. DRM of this fashion is harmful.
7. Gamers shall have the right to re-download the latest versions of the games they own at any time. Agree.
8. Gamers shall have the right to not be treated as potential criminals by developers or publishers. Agree.
9. Gamers shall have the right to demand that a single-player game not force them to be connected to the Internet every time they wish to play. Again, Valve's Steam is crappy about this. I was really put off by the way I couldn't play Half-Life 2 without some dumb Internet connection present for the first loadup.
10. Gamers shall have the right that games which are installed to the hard drive shall not require a CD/DVD to remain in the drive to play. Many a yes. I don't like messing with vitual CD drives through Windows or any type of loopback mount through *nix.

Some proposed amendments:

A. Gamers shall be able to have some level of compatibility, accidental or otherwise, with their OS, through emulation software or compiled binaries for the native system. Developers shall make no game requiring one and only one OS, but do not have to support more than one OS.
B. Gamers shall be able to loan their games to a neighbor or friend without legal penalty or frivolous technical restrictions enabling a try-before-one-buys scheme to some degree.