Web Games

Web games, also known as browser games, are games played over the web. Not to be confused with Freeware Games, which are distributed for free and act like regular computer programs. Web games are played directly through the web browser, often (but not always) with the help of a plugin.

Action Games

 * Amorphous
 * Armed With Wings
 * Aqua Rhapsody
 * Commando 2 (Run-and-Gun similar to Metal Slug)
 * Coinbox Hero
 * Garden Gnome Carnage
 * Lesbian Spider Queens of Mars (Adult Swim games)
 * Miami Shark
 * Road of the Dead

Action Adventure

 * Alice in Spaceland Series
 * Amea
 * Dungeon Blitz (also a MMORPG)
 * Emo Game
 * Escape From Puppy Death Factory (also a Metroidvania)
 * The Flowering Nose
 * Kit and The Octopod
 * Legend of Kalevala (also a Metroidvania)
 * The Legends of Hiro
 * Legends of Kong
 * Snailiad (also a Metroidvania)

Adventure Games

 * Alice Is Dead (Point and Click Game, horror)
 * A Small Favor
 * Belial (Point and Click Game)
 * Choice of Games (Choose Your Own Adventure)
 * Colour My Series
 * Darkness (Point and Click Game, horror)
 * Die Anstalt
 * Detective Grimoire
 * Echo Bazaar
 * Exmortis
 * Gretel and Hansel (Point and Click Game)
 * Jack French (Point and Click Game)
 * Johnny Rocketfingers (Point and Click Game)
 * Looming
 * Myosotis (Point and Click Game)
 * Mystery of Time and Space
 * Peasants Quest
 * Reincarnation
 * The Room the Game
 * Sissy's Magical Ponycorn Adventure
 * Story of the Blanks (horror fan-game of My Little Pony Friendship Is Magic)
 * Sub Machine
 * Trapped Series (Point and Click Game with escape-the-room, puzzle and Jigsaw Puzzle Plot elements)
 * The Trapped Trilogy
 * Godlimations
 * Trisphere
 * The Several Journeys of Reemus
 * Tube Adventures (Point and Click Game)
 * Wasted Youth
 * Xolga and Mr. Toko

Fighting

 * Gundam Fighter
 * My Little Pony Fighting Is Magic
 * Rose and Camellia
 * Super Smash Flash

Beat'Em Up

 * Armed Prophet
 * Battle Beavers
 * Fear Is Vigilance
 * Mad Karate Man

Launcher Games

 * Burrito Bison
 * Katawa Crash
 * Nanaca Crash
 * Titan Lunch Retaliation

Ordinary Platformers

 * The Bright in The Screen (horror)
 * Cactus Mccoy (also a Beat'Em Up)
 * Canabalt
 * The Caverns of Hammerfest
 * Clarences Big Chance (also a borderline Metroidvania)
 * Diamond Hollow II
 * Dino Run
 * Elephant Quest
 * Exit Path
 * Fancy Pants Adventures
 * Gun Bot
 * Icycle
 * Level Up (also a Metroidvania)
 * Meat Boy
 * Mibiblis Quest (also a Shooter)
 * Mission in Snowdriftland
 * Raze 2 (has heavy 2d shooter elements).
 * Plazma Burst Series (has heavy 2d shooter elements).
 * Remnants of Skystone (also an MMORPG and a Metroidvania)
 * Robot Wants Series (also a Metroidvania)
 * Rokko Chan
 * Sint Nicolaas
 * Stinkoman 20 X 6
 * Super Chick Sisters
 * Super Mario 63
 * Super Mario Bros Crossover
 * Thing Thing
 * This Is the Only Level (parody)
 * You Only Live Once (parody)

Puzzle Platformers

 * Achievement Unlocked
 * Closure
 * Continuity
 * The Company of Myself
 * Depict 1
 * Enough Plumbers
 * Karoshi
 * KOLM
 * Loved
 * Sequester
 * Shift
 * Time Fcuk
 * Tower of Heaven
 * You Have to Burn The Rope
 * Verge

Exploration Platformers

 * Coma

Puzzle Games

 * Fantastic Contraption
 * Guardian Rock
 * Hoshi Saga
 * Help the Hero
 * Lab of the Dead
 * Planetarium
 * Save Toshi (only the first 40 levels though)

Racing Games

 * Ffx Runner
 * Need for Madness

Action RPGs

 * Adventure Kingdom
 * Ginormo Sword
 * Super Press Space to Win Action RPG 2009 (parody)

Eastern RPGs

 * Epic Battle Fantasy
 * Fantasy Online (Affectionate Parody)
 * Ge Ne Sis (also a Tactical RPG)
 * Wings of Genesis, its spinoff, which is actually a Horizontal Scrolling Shooter.
 * Linear RPG (parody)
 * MARDEK
 * TCTRPG (also known as The Color Tuesday)
 * Turn Based Battle (parody)

Tactical RPGs

 * Ge Ne Sis (also an Eastern RPG)
 * Wings of Genesis, its spinoff, which is actually a Horizontal Scrolling Shooter.
 * Telepath RPG (also a Western RPG)

Western RPGs

 * Arfenhouse
 * Adventure Quest
 * Dragon Fable, its prequel.
 * Mechquest, DragonFable's prequel.
 * Warp Force, expansion to Adventure Quest
 * Book of Mages the Dark Times
 * Castle Age
 * Dragon Tavern
 * Dream World
 * Improbable Island
 * Knights of the Crystal
 * Mafia Wars
 * Marvel Avengers Alliance
 * Poptropica
 * Runescape
 * Sonny
 * Sryth (a text RPG)
 * Superhero City
 * Telepath RPG (also a Tactical RPG)
 * Twilight Heroes
 * Vulpin Adventure

Massively Multiplayer Online RPGs

 * Adventure Quest Worlds
 * Alteil
 * Club Penguin
 * Dark Orbit
 * Dead Frontier
 * Dealt in Lead
 * Doom Forge
 * Drakensang Online
 * Dungeon Blitz (also an Action Adventure game)
 * Evony
 * Faery Tale Online
 * Forum Warz
 * Fusion Fall
 * Gaia Online
 * Kingdom of Loathing
 * Legacy of a Thousand Suns
 * Mabinogi Fantasy Life
 * Muelsfell Rise of the Golems
 * Pardus
 * Realm of the Mad God
 * Remnants of Skystone (also a Platformer and a Metroidvania)
 * Shintolin
 * Skyrates
 * Star Pirates
 * Urban Dead
 * Urban Rivals

Simulation Games

 * Amateur Surgeon (Meatgrinder Surgery)
 * Globetrotter XL (general knowledge game)
 * Virtual Horse Ranch (virtual pet)

First-Person Shooters

 * Anaksha Female Assassin
 * Insectonator

Horizontal Side-Scrolling Shooters

 * Parasite Strike
 * Robot Dinosaurs That Shoot Beams When They Roar
 * RPG Shooter Starwish (has heavy RPG Elements)
 * Wings of Genesis (has heavy RPG Elements)

Shoot 'Em Up

 * Bubble Tanks
 * Enigmata
 * Frantic Frigates
 * Neverending Light (horror)
 * Robot Unicorn Attack
 * Robot Unicorn Attack: Heavy Metal Edition
 * Toss the Turtle
 * Ultimate Crab Battle
 * Upgrade Complete

Third-Person Shooters

 * The Breach (horror)
 * Mibiblis Quest (also a Platformer)

Vertical Scrolling Shooters

 * Grinning Cobossus

Sports Games

 * QWOP
 * GIRP

Turn-based

 * Infectonator
 * Steambirds

Real Time

 * Castle Quest 2
 * I Am an Insane Rogue AI
 * The Kings League
 * Pandemic

General

 * Anti-Idle
 * Cafe World
 * City Ville
 * Farmville
 * Frontier Ville
 * Mousehunt
 * Oiligarchy
 * Pet Ville
 * Zoo World

Digital Pet Games

 * Dragon Adopters
 * Dragon Cave
 * Pet Society
 * Puppet Nightmares
 * UniCreatures
 * Valenth
 * Wajas

Tower Defense

 * Bloons Tower Defense
 * Cursed Treasure
 * Desktop Tower Defense
 * Gemcraft
 * Glissaria
 * Mastermind World Conqueror
 * Pokémon Tower Defense
 * Toys vs. Nightmares
 * Villainous (Inversion)

Multiple

 * Abobo's Big Adventure (Beat'Em Up, Platformer, Action Adventure, Action and a Sports Game)
 * Black Market. Part Simulation Game, part resource management, part RPG.
 * Cactus Mccoy (Beat 'Em Up/Platformer)
 * Deadly 30 (RPG, survival game, Tower Defense and a Shoot'Em Up)
 * Monster Arena (Western RPG/Simulation Game)
 * The Last Stand (RPG, survival game, and a Shoot'Em Up)
 * Pico (The various flash games across Newgrounds starring the Series Mascot cover a wide spectrum of genres.)
 * Realm of the Mad God: (Roguelike/Danmaku/MMORPG)
 * Riddle School (Puzzle/Adventure)
 * World Builder (Puzzle/Adventure/Strategy)
 * Xolga and Mr. Toko (Puzzle/Adventure)
 * Mega Mash

Genre-Defying

 * But That Was Yesterday
 * Doodle God
 * The Game
 * Happy Wheels
 * Immor Tall
 * The Impossible Quiz
 * Kongai
 * The Majesty of Colors
 * One Chance
 * Osada
 * Poupee Girl
 * Steamshovel Harry
 * Today I Die
 * Transformice
 * Trigger Knight

Web Game Developers

 * Armor Games - along with hosting a number of games, they also produce many popular ones, including Crush the Castle, Achievement Unlocked.
 * Berzerk Studio
 * Big Block Games
 * Bonte Games
 * Con Artist Games
 * Fig Hunter - The website of Pseudolonewolf, the creator of the MARDEK series and Clarences Big Chance.
 * Flipline Studios
 * Hamumu Software - creator of the Robot Wants Series series.
 * Harold Brenes - creator of Fragger.
 * Ivory - creator of the Differences and Storm the House series.
 * Klicknation - creator of Superhero City, Six Gun Galaxy, Age of Champions, and Starship Command: Battle for Earth.
 * Mateusz Skutnik - creator of the Sub Machine series.
 * Minoto
 * Monstrum Games - creator of the Monsters' Den RPGs.
 * Nerdook - notably a fellow troper.
 * Neutronized
 * Ninja Kiwi
 * Nitrome
 * Square Enix (Chocobo's Crystal Tower and Knights of the Crystal)
 * Undefined
 * Zeebarf - creator of the Adventures of Reemus, A Small Favor and A Vistor series.
 * Zynga, Inc.

Gaming Sites

 * Armor Games
 * Crazy Monkey Games
 * Fettspielen
 * Fun Orb
 * Homestar Runner - A site famous for its web toons but also contains a number of popular games.
 * Jay is Games - Critical web-game reviews on countless titles (with links included to try things out for yourself). Also a source of succinct walkthroughs and development contests where designers are challenged to create original works on a loose theme, and rewarded by voting. Gamers are rewarded by awesome original games that are free-to-play online.
 * Kongregate - Home to an active community of developers and the gamers who provide feedback (and occasionally donations) to their works. A large part of the site is the social networking aspect of flash gaming, increased by meta-game achievements the developers and site mods help create. Recently made part of the Gamestop network.
 * Miniclip
 * Neopets
 * Newgrounds - Known for its flash games, but also known for flash movies. Along with Kongregate, one of the leaders in web-gaming developer sites that include social review and meta-game rewards for players.
 * N McCoy Dot Net
 * Pogo.com
 * Puppet Nightmares