ActionAction-Single PlayerAmerica's Army <== Shooter, but big download.
Blood 2:The Chosen<==Not abandonware, it is a open source FPS game.
CubeDad 'n MeDodge That Anvil!FlapFlapFlapFreeSpace 2 AbandonwareGate 88Glider for WindowsGTA 1&2 <== Grand Theft Auto before 3D
Halo Zero <== A fan made Halo Game
kkrieger <==Example of procedural content.
Lemming Ball Z<==Very fun game that combines Lemmings and DBZ
Narbacular Drop<== Nuclear Monkey Software/ Digipen Institute of Technology
N<==NINJAS!!!!!
Ocular Ink<==Unique action game
Rumble Box <==Lego Warriors
sauerbratenSea of Chaos<==Digipen Institute of Technology
SoldatTorus TrooperWolfenflash <==Flash conversion of Wolfenstein
Wolfenstein <==Fun Shooter
Action-OnlineAlbatross18 <==An odd looking game
Gunz<== Matrix style RPG/Third Person Shooter
Little Fighter 2<==fun online fighter
Plasma PongStarsiege Tribes <==FPS/TPS shooter with great customizability
RPGRPG-Single PlayerFlashTrek <==Flash based Star Trek Game
Iter Vehemens Ad NecemRPG-OnlineConquer Online <==Okay RPG with great customizability, if you're high leveled.
DofusKnight OnlineMaplestory <==An online game with a cute anime theme.
Mu Nexus WarPriston Tale Risk Your Life <==MMO RPG/Action
Runescape. <==Java based 3D Fantasy MMORPG
Tibia <==MMO
Urban Dead <== Zombie survival
StrategyStrategy-Single PlayerCloud<== University of Southern California
Schiffbruch (shipwreck)Ur Quan Masters <==So Awesome! Space Trade and exploration game.
Strategy-OnlineBang! HowdyConqueror <== Strategy Game.
Navy FieldOgame <==Space empire game
SavageSlave HackShattered GalaxyStarportTerritories 3069TremulousWulfram 2 <==Tank Battle game with difficult controls but fun gameplay
SimSim-Single PlayerAd AstraDeckerDismount <==Free Ragdoll game
Gene PoolNero<==Nero Team / The University of Texas (Austin, TX, United States)
Noctis <==Space Exploration Game, with somewhat diifferent control scheme
Vega StrikeSim-OnlineGooGrid <==SimLife like "MMO"
PuzzleBallistic<==Spartasoft/Michigan State University
BAMZOOKi <==simple 3d "Creature Editor"
BlocklandColor Mental<==Full Sail Real World Education
Grow game list (starts with cube) <==Fun flash game
Pallete<==Department of Film, TV and Multimedia, SungKyunKwan University (Seoul, South Korea)
Orblitz<==Digipen Institute of Technology
The Falling Sand Game<==THE FALLING SAND/SAND PHYSICS/DOFI BLOG GAME WHICH YOU SHOULD NOT CREATE A NEW THREAD FOR ON PAIN OF DEATH.
<current thread>Game Listings1up.com's 101 free games of 20061up.com's 101 free games of 2007Arcade TownExperimental GameplayIFicton <==Text Based Games
Incitti<== a few free games here, Grid Wars has been removed.
Infocom WikiIron Realms Entertainment<==Text based MUD's(
Multi
User
Dungeon, basically an MMO) by Iron Realm Entertainment
Jay's Web Games <== Actually reviews games.
Mpogd Lists <== I find almost everything here
Onrpg lists <== Big RPG list
Top Multi User Dungeon Sites <==Text Based MMO's? Find'em here
Wikipedia Game List <==Good game list.
Games from Forum MembersBorogove's GamesCreature Editor 2.0<==Developed by Huggkruka and Hydromancerx
Notrium <== Co-developed by Quanrian
Requires DosThe Elder Scroll's: Arena <==Original Elder Scrolls game, a classic
Good Abandonware Sites <==those that play by the rules
Abandonia <== updated everyday!
Home of the Underdogs <== has almost everything, and is somewhat faster than its old incarnation, with a billion ads.
The Spore Experience The closest we can come to the real thing.
Definitive=
SimEarth AbandonwareCreature Editor=
Creature Editor 2.0Microbial Stage=
flOwThe Animal Stage=
Lion AbandonwareThe Tribal/Civilization Stage=
FreeCivThe City Building Stage=
Original SimCity(requires free registration)
The Space Faring Stage=
NoctisIndependent Game Festival <==Games Featured at the GDC 2006
UtilitiesDosBox Get "Windows" if you don't know which one to get. For running older dos games on newer operating systems.
Ad AwareSpybot- Search and DestroyI wanted to create a good contribution to the forum cause I got such a warm welcome here!

I will update if you find a game that isn't covered in the above links, or if you have one that you think should be on this page, and not indirectly through another list, then post your recommendation and I'll add as soon as I see it.
See you on the battlefield!
EDIT:
Recommendation RulesAll recommendations cannot violate forum rules.
If a site has any objectionable content, either linked to or on the site, don't reccomend it.
Abandonware is allowed, but there must be a warning that the site is abandonware, and the site must follow ESA notices. (You can tell if it does if it doesn't allow you to download certain games)
If you are unsure about any particular site, PM me.
The Graveyard These Links no longer work
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