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  Shark Attack A Free Online Game
Occupy Wall Street A Free Online Game
Occupy Wall Street
Extreme Planet Defense A Free Online Game
Extreme Planet Defense
Butter Frosting Cupcakes A Free Online Game
Butter Frosting Cupcakes
Galactic Warfare A Free Online Game
Galactic Warfare
Shark Zero A Free Online Game
Shark Zero
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v's vs z's

Free Online O Games

Only Way to Escape A Free Action Game
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Only Way to Escape Game


Plays: 1976
Category: Action Games
Try to get out from Only Way to Escape Room by collecting the items and using them to in the correct places!
OnlyWars A Free Adventure Game
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OnlyWars Game


Plays: 2797
Category: Adventure Games
OnlyWars is a futuristic-based shooter styled scroller game made by Only-Games.co.uk. Use the Arrow keys to move and the space bar to shoot in this all-action game!
Onomastica A Free Action Game
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Onomastica Game


Plays: 1382
Category: Action Games
Linguistic arcade game in Pop Art style.
ononmin A Free Action Game
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ononmin Game


Plays: 2585
Category: Action Games
Only One Minute. To shoot the ball on longest possible path.
Onristu A Free Other Game
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Onristu Game


Plays: 2058
Category: Other Games
Help the world of Onristu free themselves from the darkness. Play through story mode with cute animated cut scenes and fun game play, or skip right to the action in free play mode.
Onslaught 2.1 A Free Shooting Game
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Onslaught 2.1 Game


Plays: 5643
Category: Shooting Games
Onslaught 2.1: All the fun of Onslaught but with fresh challenges.
Onslaught 2.2 A Free Strategy Game
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Onslaught 2.2 Game


Plays: 22891
Category: Strategy Games
A tower defence style game with many different types of turrets, combos, upgrades, enemies, maps and lots, lots more. Map editor, modding interface, challenges, the list goes on.
Onslaught Defense A Free Action Game
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Onslaught Defense Game


Plays: 763
Category: Action Games
Wield powerful weapons to defend your castle against hordes of dragons and demons in this action-packed castle defense game! Upgrade powerful swords, axes and spears to earn the mighty runeforge! How many monsters can you slay before your castle will be overrun?
Onslaught Tower Defence A Free Fighting Game
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Onslaught Tower Defence Game


Plays: 4639
Category: Fighting Games
This is a re-make of the game Onslaught Tower Defense, made to be less resource intensive and add new features such as achievements and coins. This games is not complete, but it is playable. Currently you can choose one of 9 maps in the yellow and blue squares, choose the number of waves, and begin playing. You can build 3 towers and they will proceed to attack enemies that come in waves of 10 until all waves are done. Click next wave when all the enemies from your current wave are on screen to advance to the next wave, or when the 20 seconds are up or when all the enemies have been killed. Clicking towers will allow you to select them, and from there upgrade damage, rate of fire, or sell the turret. I'm working on adding the ability to upgrade range, move turrets, have more achievements that unlock abilities, widen the store, and adding more towers.
OobakoO A Free Puzzles Game
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OobakoO Game


Plays: 2328
Category: Puzzles Games
Simple puzzle/arcade type game where your goal is to clear all of the orbs on the play area. Swap colors around to make new, complex colors to destroy more orbs.
OokiCookie A Free Action Game
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OokiCookie Game


Plays: 1371
Category: Action Games
Do you like cookies? Then try OokiCookie! A colorful avoider game. Do not get caught by the hungry but very cute bushes. 21 exciting levels are waiting for you. Many awards and achievements. Do not miss!
Oops .. Blub A Free Other Game
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Oops .. Blub Game


Plays: 11570
Category: Other Games
You must make bubbles to coop in the butterflies in it. When the bubbles (with a butterfly) already steady fly on the sky, jump to catch it. Complete your progress level until 100% (reach 1000 point). There're 3 random bonuses that you can used to barter your butterflies, it can make your progress level complete faster.
OopsAUfo A Free Action Game
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OopsAUfo Game


Plays: 1374
Category: Action Games
A shoot em up with cartoonish graphics and a challenging gameplay!
Oozing Empires A Free BoardGame Game
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Oozing Empires Game


Plays: 1074
Category: BoardGame Games
Grow your empire to dominate the world! The Black and White empires take turns to play. At each turn, an empire chooses a colour and absorbs all the countries of that colour that touch it. The first empire to control half the map wins. The settings screen allows you to choose different map sizes, and there are three levels of computer opponent skill. You can also select two human players for hot-seat play.
Oozy A Free Action Game
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Oozy Game


Plays: 1180
Category: Action Games
The Life Flower has been stolen by a crazy wizard. It's up to Oozy and his Fly companion to go to wizard's floating palace and retrieve the flower! - Travel across 40 stages in 4 unique locations and encounter fearsome foes! - Battle against 4 unique bosses! - Collect the Lime Jelly hidden on every stage to unlock the true ending.
Open Doors A Free Puzzles Game
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Open Doors Game


Plays: 7978
Category: Puzzles Games
Simply move the square to the X. Moving through lots of doors along the way.
Open Doors 2 A Free Puzzles Game
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Open Doors 2 Game


Plays: 5760
Category: Puzzles Games
Simply move the square to the X… again! But now there’s double-doors, collapsible floors, and switches. Plus, get medals for completing the puzzle fast and in the least number of moves.
Open Gem Shooter A Free Action Game
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Open Gem Shooter Game


Plays: 2658
Category: Action Games
Open Gem Shooter is a 2D shooter game taking place in space. Destroy all the blue gems and avoid them as they have a deadly poisson. You have 3 tries commander.
Open Park Wedding A Free Customize Game
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Open Park Wedding Game


Plays: 1260
Category: Customize Games
Stephanie is an innovative person and so she has planned to get wedded in an open park. She has got her new wedding dress but still she wants you to help her get ready for the wedding.
Open shoulder dress A Free Dress-Up Game
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Open shoulder dress Game


Plays: 1383
Category: Dress-Up Games
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Open Source Rock Paper Scissors A Free Casino Game
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Open Source Rock Paper Scissors Game


Plays: 3224
Category: Casino Games
Rock Paper Scissors, a finger-guessing game,this is the first game can view source when playing in the world(click "view source"button to view the source)
Open Space A Free Action Game
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Open Space Game


Plays: 1695
Category: Action Games
space attack
Open sports car coloring A Free Customize Game
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Open sports car coloring Game


Plays: 1084
Category: Customize Games
Open sports car coloring Game.
Open the Door A Free Puzzles Game
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Open the Door Game


Plays: 2066
Category: Puzzles Games
solve puzzles to open door and escape the room
Open the Elevator A Free Education Game
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Open the Elevator Game


Plays: 575
Category: Education Games
Use your brain to complete levels... Can You get to the top level ?
Open the next room A Free Adventure Game
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Open the next room Game


Plays: 450
Category: Adventure Games
Use your brain to complete levels... Can You get to the last room ?
Open top car coloring A Free Customize Game
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Open top car coloring Game


Plays: 2041
Category: Customize Games
Open top car coloring Game.
Open top jeep coloring A Free Customize Game
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Open top jeep coloring Game


Plays: 481
Category: Customize Games
Open top jeep coloring Game.
Open-Pit Mining Jigsaw A Free Puzzles Game
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Open-Pit Mining Jigsaw Game


Plays: 2566
Category: Puzzles Games
Open-Pit Mining Jigsaw Puzzle. Can you solve it?
Opening new star showroom A Free Customize Game
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Opening new star showroom Game


Plays: 606
Category: Customize Games
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Tips: For a collection style game that doesn't use any player projectiles you can upload a blank SWF to high the splash screen graphic.