DOS

Classic DOS Games
Shareware and freeware DOS games to download or play in browser, with reviews, ratings and screenshots. Archives the version history of each game, including source code if possible.
http://www.classicdosgames.com/

DOS Gamer
Collection of freeware, shareware and trialware, with reviews, cheats, walkthroughs, and music.
http://www.dosgamer.com/

DOS Games
Contains shareware and freeware games, organized by genre. Also available are associated utilities and a message board to find old games, get games working or discuss DOS games.
http://www.dosgames.com/

DOS Games Archive
Collection of shareware and freeware DOS games for download. Games can be organized alphabetically, by genre and by version. Also includes an online DOS game shop.
http://www.dosgamesarchive.com/

DOS Games Download
Reviews and downloads of DOS games, organized by category.
http://www.dosgamesdownload.com

DOS Games Online
Downloads and reviews of hundreds of freeware and shareware DOS games, with ratings and reviews.
http://www.dosgamesonline.com

DOS Museum
DOS Museum has a wide variety of DOS game downloads. Includes descriptions and videos for each game.
http://www.dosmuseum.com/

dosgames.cc
Downloads of free, legal DOS games.
http://www.dosgames.cc

Old School DOS Games
Shareware and freeware games available for download. Also offers information on DOS emulators.
http://www.oldschooldos.com/