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Brick Attack A Free Online Game
Brick Attack
Turret Rage Xtreme A Free Online Game
Turret Rage Xtreme
CAR MAYHEM A Free Online Game
CAR MAYHEM
Earth Destroyer A Free Online Game
Earth Destroyer
Monster Buster A Free Online Game
Monster Buster
NINJA WARRIOR A Free Online Game
NINJA WARRIOR

Online Challenging Games
Christmas Adventure Game

Plays: 3533
Category: Puzzles Games
This game is one of those few puzzle games that stays challenging and addictive without being too difficult. Solve puzzles, move the elements to burn off the line, go through the levels to score points.
Mysterious Hospital Game

Plays: 3530
Category: Puzzles Games
A classic but amazingly challenging hidden object game by Hidden-Object-Online.com . Your task is to clean the hospital. At first you should make the order in the store room using the photo, then find the necessary instruments in the operating room, and at last help the patient to look for the pills scattered over the ward.
Trivia Machine Game

Plays: 3526
Category: Puzzles Games
Climb to the top of the ladder by answering fun questions from the trivia machine! The game features thousands of trivia questions across 9 fun categories. The unique game play involves strategy as well as trivia knowledge...it's challenging and entertaining! New questions are downloaded automatically so you may never see the same question twice. Full version features Thousands of fun trivia questions! Multiple categories and difficulty levels Exciting Lightning rounds! Automatically download new questions
Monster Truck Xtreme 2 Game

Plays: 3513
Category: Action Games
Play the second release of Monster Truck Xtreme with 8 new challenging levels and 3 new trucks! Collect the stars to unlock new trucks! Race through desert, ice and prairie in 8 challenging levels! Use the improved nitro to beat your score and reach all the stars
A Light in the dark Game

Plays: 3512
Category: Adventure Games
Lost in a cave that resemble a cave,Telstar has to rely on his determination to explore & find his way out of the dark. The light that hovers around him as he moves symbolises hope. Telstar has to move in the dark along blockages in his quest to find way out. There are 12 stages of with different level of challenge. Telstar has to ACTIVATE all the SWITCHES along his way to UNLOCK the BLUE BLOCKS in order to move to the next level.
Monster Truck Xtreme 3 Game

Plays: 3509
Category: Driving Games
Race through desert, ice and prairie in 8 challenging levels! Includes: - 3 trucks (2 unlockable) - 8 levels - collectable nitros - collectable stars (to unlock trucks) - smashable cars - obstacles (barrels, tree logs, smashable cars) - dynamites! (detontes on impact or through triggers) - sensor triggers (release logs, release barrels, detonates dynamites)
Purejong Game

Plays: 3503
Category: Puzzles Games
Purejong is an outstanding Mahjong game with highly appealing photorealistic graphics, automatic hints, mix buttons and more. It has 12 challenging levels for everyone, from beginner to expert. Up to three stars per level can be gained, based on speed and non use of helpers like mix buttons. Licensees like Mindjolt named it the best flash Mahjong game they've ever seen.
Compound letters Game

Plays: 3498
Category: BoardGame Games
Test your word-building prowess in "Compound letters", a challenging game that puts a new spin on the classic game theme. This is a word search game, but with a twist. The puzzle board will spin and flip as you search for words, giving you an extra challenge. There are 3 difficulties: Easy - a static puzzle that doesnt rotate or anything; a basic word search. Normal - every 15 seconds, the puzzle board rotates clockwise. Hard - every 15 seconds, the board will either rotate clockwise or counterclockwise, or flip horizontally or vertically. This is your ultimate word search game with the bonuses of rotating and flipping boards. Use your mouse to connect each letter to form a word.
SpaceBar Game

Plays: 3498
Category: Strategy Games
Click the space bar as many times as you can in 10 seconds compete against players all over the world.
Invaders Zero Game

Plays: 3489
Category: Action Games
It’s a classic space invaders game mixed with ship upgrades and a challenging AI. Enjoy!
Path to Presents Game

Plays: 3484
Category: Adventure Games
A challenging puzzle platform game! Help Santa collect his presents for good children! How quickly can you get through all 20 levels? Use your arrow keys to move, click and drag to draw anywhere. Have fun! -KyleDaFox - Coding, Game Art
Christmas Link Game

Plays: 3480
Category: Puzzles Games
Santa Claus brings many gifts for Christmas. Are you ready to celebrate? OK, Christmas bells, candy canes, snowman, socks, Christmas tree, these cute cards are challenging you. Make full use of your matching skill, come on. Merry Christmas!
Teddy Matcher Game

Plays: 3479
Category: BoardGame Games
Teddy Matcher is a cute match-3 game with many challenging levels. You will find new challenge and a new target every level.
Gemwars Game

Plays: 3478
Category: Action Games
Gemwars is a great combination of popular block collapsing genre and turn based strategy game in which you are playing against computer in 40 levels of increasing difficulty! Hours of challenging and addicting gameplay guaranteed!
Funcar Racer Game

Plays: 3477
Category: Action Games
Enter a challenging race against time and opponents! Reach the next checkpoint before the time is up. Other fun car drivers try this, too. Beware of collisions or collect repair kits to reduce damage. Don't miss jerrycans to fuel your car.
Choo Choo Puzzles Game

Plays: 3477
Category: Puzzles Games
Challenging puzzle game with lines, tracks, simple rules and a lot of thinking.
Giant Walking Eye Game

Plays: 3464
Category: Action Games
Invade the Earth. Upgrade your walkers. Destroy humanity. This distance runner puts you in a an alien eyebot strider through 25 of the world's major cities. Use your lasers and missiles to fend off the human's pathetic attacks as your claw harvests their flesh for the good of the alien species. As you pick up speed, you'll gain a powerful shield, protecting you from tanks, bazookas, and helicopters.
Sky Wayfarer Game

Plays: 3459
Category: Action Games
Use arrow keys to move and stay on the screen as long as you can. Platforms will generate randomly and will accelerate over time. Coins will increase your score. There are 4 types of power ups. Lightning increases your movement speed, snail slows down the platforms, wings turn off the gravity and wall creates 3 platforms, making you harder to die. All power ups last for 30 seconds and give you +100 bonus score.
Dirt Rider Game

Plays: 3456
Category: Driving Games
Ride your dirt bike over various challenging courses and try to complete the them as fast as you can in this extreme dirt rider game. Push your dirt bike riding skills to the limits. Good Luck!
Alma Mater Secrets Game

Plays: 3447
Category: Puzzles Games
A classic but amazingly challenging hidden object game by ArcadeGamePlace.com. There is a cleaning day in the college building. Help students to find the hidden object and put in order, there is a list of the objects that should be found, click at them with the mouse, when all objects are crossed out, escape the room and go to another.

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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.