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  Revenge of Powder Monkey A Free Online Game
Sandy Bridge DRM Attack A Free Online Game
Sandy Bridge DRM Attack
Super Cat: Invasion A Free Online Game
Super Cat: Invasion
Eat And Destroy A Free Online Game
Eat And Destroy
Crazy Race A Free Online Game
Crazy Race
Operation Hybird  A Free Online Game
Operation Hybird
Zombie killer A Free Online Game
Zombie killer

Online challenging Games
Galactic Ship Repair Ltd Math Game

Plays: 1545
Category: Puzzles Games
Welcome to your first day at Space Repair Services ltd! Have you got what it takes to be the best space ship navigator in the galaxy? Find out it this challenging strategy game!
StoneQuest Game

Plays: 1543
Category: Puzzles Games
Enter an underwater puzzling world as you move stones, collect gems and solve all puzzles.
Two Bears in a Barrel Game

Plays: 1540
Category: Puzzles Games
In this cute challenging game you are been challenged to drop the two little bears in the barrel. Watch out for the instructions while playing the game and challenge your task with creativity.
The Floor Is Lava Game

Plays: 1540
Category: Action Games
You are an ice cube and have somehow managed to end up in a room that is filling up with lava. Get to the switch to stop it! Play your way through 25 levels in this stylish, challenging, and charming platformer.
Workaholic Adventures Game

Plays: 1535
Category: Action Games
Challenging puzzle-platformer with different, unique, game mechanic. Go trough 40 puzzling levels in 3 different worlds or create your own levels.
Sticky Blocks Mania Game

Plays: 1534
Category: Puzzles Games
Sticky Blocks Mania is a new and very addictive and challenging blocks puzzle game. Your objective in this game is to place similar colored smiley together to remove them from the board. Remove all smiley to solve the puzzle and get to the next level. Click More Help for more instructions. Once you advance to next levels the game will become more fun and a little complex, so it will be more and more challenging. Good Luck!
Save the Frog Princess Game

Plays: 1526
Category: Puzzles Games
Cute puzzle physics game, where player uses mouse to fire cannon. The objective is to kill all robots on the field and avoid hitting the princess. Save kidnapped princess on all 32 challenging levels.
Rancher Game

Plays: 1524
Category: Action Games
An 8 leveled game with superb game play small but smart way of finishing. Its definitely challenging enough to pull the gammers towards game.
Robotic Emergence 2 Game

Plays: 1524
Category: Strategy Games
Humans have apparently been extinct for over a century and robots have taken their place as rulers of the world. But a small group of humans has returned to claim back the Earth! Build your factory city in this challenging strategy game, create robots to fight against the enemy and take over their land to bring Earth once more back to life!
Comic Book Movie Game

Plays: 1522
Category: Action Games
Here comes the most intense shooter that will wipe out all pesky comicbook nerds. Comic Book Movie is about the journey of Brix the Stickguy who hates nerds who like light-hearted and generic movies. Join him as he fight his way through waves of enemies. Destroy all the annoying nerds once and for all. There are 12 intense levels with lots of weapons and upgrades and 6 challenging boss fights.
Tri Color Blocks Game

Plays: 1515
Category: Shooting Games
One of the most challenging casual games could be the Broken Bricks. With inspiration of age old bricks game, the game is designed with challenging speed and stunning 10 levels. Player is supposed to break all bricks the red ones need three shots, yellow ones 2 and the green ones a single shot to blast them.
Mushboy Game

Plays: 1512
Category: Puzzles Games
Mushboy is one of the challenging puzzle genre game. The player is supposed to identify the right goal point and make mushboy reach it, by damaging the glowing boxes in the way. Player is supposed do least damage to cross all the levels. Game is packed with 15 challenging levels.
Blokk Party 2 Game

Plays: 1502
Category: Action Games
Blokk Party 2 is a challenging block breaker game set to 10 different dance tracks. Unlike many other block breaker games, players must not only keep their primary ball bouncing, but must also avoid hazards such as fireball launching blocks, paddle freezing blocks, and power-downs that will slow the player or steal their hard-earned points. Spread across 40 different levels, players must master their play-skills quickly as the ball increases in speed every 10 levels. No single play-through is the same, as hazards randomly spawn on top of blocks that still exist on the play field. Players will not be able to master the game through pattern memorization as they must constantly dodge fireballs launched at their paddle by randomly generated orange blocks, find their controls frozen when breaking a spawned black block, and avoid catching red power-downs that will siphon away their precious score. Players will luck out when breaking blue blocks that spawn additional bouncing balls to juggle or catching blue bonus icons that will begin a 15 second power-phase that will increase their scores by x2, x4, and x6.
Pave The Way To Baldheaded Strong Game

Plays: 1495
Category: Puzzles Games
Pave The Way To Baldheaded Strong is a challenging game, help Baldheaded Strong fix rail and let little train lead to the tunnel smoothly, 24 levels in the game can be challenged. Kids, hurry to try it.
Need Water Game

Plays: 1493
Category: Adventure Games
Need Water is a new challenging game like the where is my water game. Dig through the ground and try to get the water (and oil) to the factories. Destroy stones and control the liquids. The water should be guided to the water factory and the oil to the oil factory. Collect the diamonds that are hidden in the earth and buy new skills and items in the upgrade panel. Unlock the achievements and earn rewards. Try to complete all the challenging levels.
The Platformer Game

Plays: 1491
Category: Action Games
Platformer is a trendy and catchy type of most famous platformer genre. Game has got ten most challenging levels that could make the game one of the most strategic game play ones in the genre.
Eko's Adventure Game

Plays: 1481
Category: Adventure Games
In this game you play as shaman Eko and your adventure starts now! Your goal is to pass many challenging levels with best time you can get. From each level player can get stars for completing level, getting secret star and perfect time, which unlocks new skills and levels. The further you go, the more challenging levels are and gets funnier and funnier.
Voodoom Game

Plays: 1480
Category: Action Games
A new challenging remake of Load Runner
HEXEP Game

Plays: 1476
Category: Puzzles Games
A simple yet increasingly challenging puzzle game about lighting a path through hexagons.
BlueOn Game

Plays: 1476
Category: Puzzles Games
A physics-based stacking game with 30 challenging levels. Find a way to stack shapes on the platform safely. Touch stars for your achievement.

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Tips: Setting the opponent movement speed to zero can give you a platform for you to do your own animation instead the opponent graphic. You could make an opponent popup and then hide again using animation instead of the built in movement.