Genesis

Dex's Sega Site
Offers game list and machine specifications.
http://dextremes.com/genesis/

Genesis at MobyGames
Historical archive of Sega Genesis games with screen shots and reviews.
http://www.mobygames.com/browse/games/genesis/

Genesis Collective
Contains screen shots, scans, and news.
http://www.genesiscollective.com/

The Genesis Project
A database of Sega Genesis games containing reviews, codes, and screenshots.
http://www.genesisproject-online.com

The Green Hill Zone
The GHZ - Refuge for Sonic the Hedgehog freaks since 1997
http://www.theghz.com

The Mega Drive Championships
Modern day competitions on the Mega Drive. Are held in both Portugal and the UK.
http://www.megadrivechamps.org

Megadrive games
Megadrive site devoted to the history of the Megadrive and Genesis, including Sonic. Includes an ever-growing library of screen shots, music, and reviews on the best Megadrive games.
http://members.fortunecity.com/muzzer2000/index.html

ScreenMania
Contains screen shots of the games.
http://screenmania.retrogames.com/index2.html

Sega-16
Sega-16.com: The complete online resource for everything Genesis/Mega Drive
http://www.sega-16.com

The Sega 16-Bit Webpage
Fan page with reviews, screenshots, articles, and nostalgia.
http://genesisreviews.tripod.com/

Video Game Reviews
Offers game reviews with scores.
http://www.videogamereviews.vg/genesis.shtml

VideoGame Strategies - Genesis
Codes, Hints, cheats, and FAQs for the Sega Genesis Videogame System.
http://vgstrategies.about.com/library/gen/bl_gen.htm