Not really a "tool" but I found that link quite entertaining and thought I should share it.
Just take a look at it for different reasons. Maybe a time travel back to the times you were young, maybe to see how odler generations played games, or to see the origins of video/computer games.
Enjoy!

http://www.retrothing.com/video_games/index.html



And because it fits pretty good. Here is a site with lots of original C64 .sid files and .mp3 emakes (legal). Have fun!

http://remix.kwed.org