Atari VCS 2600 NTSC And PAL Games List by Dieter König
This is a list of all officially released games for the Atari VCS 2600, with information if the game was released in NTSC and/or PAL countries. Note: This list is still heavily under construction and far from complete!

Atari 2800 by Marc Oberhäuser (Special off-site link)
History and facts about the Japanese version of the Atari 2600: the Atari 2800! With many photos of hardware and games.