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  Space Turret Defense A Free Online Game
Sauce Throw A Free Online Game
Sauce Throw
Bees v.s Alpacas A Free Online Game
Bees v.s Alpacas
Ships vs Subs A Free Online Game
Ships vs Subs
Dantes Inferno A Free Online Game
Dantes Inferno
Nerds vs Jocks A Free Online Game
Nerds vs Jocks
Cupids Revenge A Free Online Game
Cupids Revenge

Online Challenging Games
Air Race Game

Plays: 5408
Category: Driving Games
This is the Formula One of the air. Work your way through 30 challenging races to the World Cup and get gold medals and money in the process. You will need it if you want to take your plane to the limits!
Army Training Game

Plays: 5398
Category: Action Games
Prove you're the best soldier by taking down forces in a challenging training ground. Shoot down wooden targets while rescuing hostages as fast as you can! Be careful, there's not much time and you have limited ammo! Every bullet counts, so make sure you hit enemies, not hostages!
Gloom Game

Plays: 5391
Category: Action Games
Looks like someone didn't take their happy pills this morning. Try to survive for as long as possible in this hectic, fast-paced shooter!
Zombie Pinball Game

Plays: 5383
Category: Action Games
Ping ghosts, kill zombies and fight bosses all with a pinball in a graveyard. Fun but challenging, can you kill the zombies before you fall? Original idea, classic pinball.
Jumpaloo Game

Plays: 5377
Category: Adventure Games
Jump! Jump! Jump! Play solo for a fun and challenging game, Play with up to 2 friends and compete for the top score!
Mix Sudoku Light Vol 2 Game

Plays: 5362
Category: BoardGame Games
Are you really good at Sudoku? Find out with this challenging collection of 60 medium, hard and very hard Sudoku puzzles from 6 different variants, including Classic, Diagonal, Irregular, OddEven, Chain and Multi. Each puzzle is solved like a regular Sudoku with an additional twist according to the variant rules. There is only one unique solution for each puzzle.
Gravity Football EURO 2012 Game

Plays: 5336
Category: Sports Games
Become the Champion of the latest Euro Cup! Use any of the 16 qualified national teams or play a quick match against the CPU. Features: - Innovative and challenging gameplay - Group Stage (4 Groups) - Knockout Stage (quarter-finals, semi-finals and final) - Sudden death with golden goal in Knockout Stage - 3 difficulty levels - Play against 2 coordinated CPU players in advanced levels - 14 achievements - Quick match against the CPU - 2012 Euro Cup groups or random groups - 16 national teams - Croatia - Czech Republic - Denmark - England - France - Germany - Greece - Italy - Netherlands - Poland - Portugal - Republic of Ireland - Russia - Spain - Sweden - Ukraine Are you up for the challenge?
Judgment Day's Bike Game

Plays: 5332
Category: Driving Games
Ride your bike through all challenging obstacle, earn points and try to complete all 7 different levels.
Bike Cop Adventure Game

Plays: 5318
Category: Action Games
Complete the challenging levels in this police motorcycle game and show the criminals that they have to always watch their backs with you on the streets.
Background survival Game

Plays: 5312
Category: Action Games
Guide the mouse through the obstacle course in 16 challenging levels. Collect power ups to help you on your journey.
Sinister Sudoku Game

Plays: 5310
Category: Puzzles Games
Sudoku learns some new tricks in this challenging puzzler - a constantly shifting grid makes every move matter.
Control The Copter Game

Plays: 5298
Category: Adventure Games
Drive the helicopter to cover 6 maps. Simple but addicting and challenging.
Rock Rush: Classic 1 Game

Plays: 5243
Category: Action Games
Fresh off the code press from us at Retrocade is Rock Rush, our very own Flash version of the classic Boulder Dash! Dig through bug-infested caves dodging boulders, triggering magic walls, and collecting diamonds until you have enough to open the exit. But it doesn't stop there. Depending on which version of Rock Rush you play there may be even more challenging elements to figure out before those gems come within your grasp... CLASSIC I: Boulder Dash is undoubtedly one of the most famous 8-bit games of all time. While it's still possible to play the original levels in many ways, either through emulation or by downloading one of its many remakes, this version of Rock Rush was made to keep things simple and just let you enjoy the head-scratching puzzles featured in the original Commodore 64 version of the game that started it all. We hope this brings back some memories!
Youda Farmer 3: Seasons Game

Plays: 5238
Category: Action Games
In Youda Farmer 3: Seasons, the Bigboss is long gone and your farm is finally faring well. During a stormy winter night however, disaster strikes, reducing most of your farm to rubble. Once again you face the difficult task of rebuilding the village and your farm. Facing cold winters, bug ridden springs, hot summers and stormy falls, this new installment will put your farming skills to the test more than ever. On the upside there are a lot of new features that will help you through these hard times. Build new farms and shops. Handle Take Away orders for the brand new Restaurant and buy tools in the pawnshop to improve your workflow. Build your very own Hotel and serve hungry guests your finest dishes. Show off your farming skills in 6 challenging games during the annual Country Fair!
Kick The Earth Game

Plays: 5228
Category: Strategy Games
Play God as you Kick The Earth in this fun, addicting, challenging game "Kick The Earth".
Hannah Montana Match It Game

Plays: 5185
Category: Puzzles Games
Hannah Montana Match It and really fun and challenging Hannah Montana memory game. How fast can you complete this great Hannah Montana game?
Gem-Hunter Game

Plays: 5173
Category: Action Games
Race through 30 challenging levels, bust your fingers on this epic level based game with many obstacles. To maintain a high score you must complete the levels in the highest possible time, there is a set maximum time for each level. Instructions appear in the game where necessary Controls WASD or Arrow Keys
Wack a Mel Game

Plays: 5170
Category: Other Games
Yet another whack a mole game but this one features celebrity Mel Gibson. Challenging and funny!
Chromatica Game

Plays: 5167
Category: Puzzles Games
Entertain your brain with this addictive, challenging puzzle game.
Founcy Game

Plays: 5155
Category: Adventure Games
Keep your furry character on the platforms for as long as possible. A cute and challenging game about a fury little guy named Founcy who bounces around by hitting paddles and while he's at it he collects power-ups and points, don't miss a paddle though! Or you will find him dropping to a horrible fate.

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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.