Games are a playful or competitive activity. Both downloadable and online.
Addicting Games: Cure your boredom.
Adult Swim Games: Not only one of the best providers of cartoon/tv show entertainment, now they have accumulated quite the collection.
Akinator: A web Genie tries to guess what you are thinking of. 20 question-ish game.
Alien Arena: Free first person shooter game. Need I say more..
Armor Games: Fun galore! Relieve some of your stress by beating evil goblins, or fulfill your dreams by running a successful fake business.
Battle for Wesnoth: Turn based. Download(linux/windows/os x). Strategy, Fantasy.
Bit Fighter: Arcade. Multiplayer. Download(windows/linux/os x). Space, fast paced.
Boomerang – Games: These games are themed after classic cartoons and other shows you would find on the Boomerang TV Network.
Browser Quest: RPG. Online Play. Single Player.
Cave Story: Side Scrolling. Single Player. Download(windows/linux/os x).
Chesscademy: Chess lessons. Tracks your progress.
Classic Games Arcade: All the oldies but goodies.
Cookie Clicker: Puzzle. Multiplayer. Download(windows/os x). addicting.
Desktop Dungeons: The first version of Desktop Dungeons(a now popular game) is offered for free by its creators.
Double Speak Games: Dark Room(popular idle) and Gridland(puzzle).
Dungeon Blitz: Multiplayer Online MMO.
Drunken Paladin: RPG. Single Player. Download. Humorist.
Dueling Analogs: Video Game Hilarity. Site with Game related content and news.
Dwarf: Fantasy. Single Player. Download(windows/linux). Low end graphics High end Adventure.
Epic Mafia: Party Game. Multiplayer. Online play. Fantasy.
First Person Tetris: Puzzle, single player, online play.
Game About Squares: This is a game about triangles.. jk Squares for days.
Game Jolt: Indie. This site has a lot of features, including chat and in game achievements. If you are a game developer, this site is also a great way to promote yourself and your work.
Gameshed: Over 1,000 choices! Lets waste some time.
GeoGuessr: Be sent to a random location via google maps. Explore the surroundings and attempt to guess where you are.
Globe Genie: Guess the location you are spawned at via google maps.
Internet Game Database: Find information.
Jay Is Games: Games(online or downloadable) and game reviews.
JetPunk: Firstly, this name is super awesome. Secondly, if you like quizzes, then I guarantee you will be consumed forever within this site.
Kittens Game: Idle game involving kittens. Very addictive.
Kongregate: This site offers achievements, over all user levels, and a nice community with chat options.
Lichess: Online chess server under the open source MIT License. Learn to play. Watch others. Get better.
Little Alchemy: Puzzle. Single Player. Online Play. Addicting, create elements.
Maldita Castle: Arcade Game. Single Player. Download(Windows/Ubunta/Ouya). Adventure.
Map Crunch: Street View location guessing.
Matt Makes Games: Collection of various type of downloadable(OS X/Windows)games. Indie.
Minefield, HTML5: A giant version of the popular game Minesweeper. You get to play with players from all over. So. Addicting.
Minetest: Open source Minecraft alternative.
Mouse City: Games that only use the mouse for playing.
NationStates: Nation simulation game. Apply your political ideals and see what happens.
Neopets: Virtual World, mini-games, virtual pets.
NesBox: Multi platform emulator. Game old school style.
Newgrounds: Games, Movies/Videos, Audio/Music, and Art. The community is amazing. Great place to find new media or to show off your work.
Orisinal: Simple games, awesome game design.
PlayR: Old school, collection. Online Play. Kind of like emulator.
Rift: MMORPG. Multiplayer. Online play.
Runescape: MMORPG. Download. Multiplayer. Fantasy.
Runescape – Old School: Play the older version of the popular game Runescape.
SNESFun: Retro gaming online.
Splunky – classic: Exploration Game. Single Player. Download. Treasure hunting, classic Platform.
Steam – Free to Play: Most people know what steam is. This is a link to all their free to play games.
Super Crate Box: Side Scrolling. Single Player. Download(windows/os x).
SuperGames: Won’t work unless you disable/pause ad blocking extensions.
Team Fortress: Downloadable game. The whole game can be played without making any purchases. However, there is premium content(mostly cosmetic).
Tee Worlds: Shooter. Multiplayer. Cute. Download(windows/os x).
Tetoris: The worlds largest Tetris game. I couldn’t even get one line!
The Great Gatsby for NES: Arcade Game. Single Player. Retro.
The Kingdom of Loathing: Funny RPG game. Simply graphics but awesome gamy play.
The Powder Toy: Shooter Game. Multiplayer. Download(linux/windows/ubuntu). Blow Stuff Up.
Vindictus: Downloadable game. Optional premium content.
Warlight: Online customizable strategy game. Play against AI or your friends.