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  Defend The Tree Ship A Free Online Game
Zombie Crush A Free Online Game
Zombie Crush
Plane Shooty Game A Free Online Game
Plane Shooty Game
X-treme Fighter Plane Defense A Free Online Game
X-treme Fighter Plane Defense
Pie A Fupa A Free Online Game
Pie A Fupa
Project Mayhem 2 A Free Online Game
Project Mayhem 2
Medal of Pompous Pearl A Free Online Game
Medal of Pompous Pearl

Online Challenging Games
Mysterious Hospital Game

Plays: 3184
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.
Purejong Game

Plays: 3179
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.
A Light in the dark Game

Plays: 3171
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.
SpaceBar Game

Plays: 3157
Category: Strategy Games
Click the space bar as many times as you can in 10 seconds compete against players all over the world.
Christmas Link Game

Plays: 3156
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!
Monster Truck Xtreme 3 Game

Plays: 3155
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)
Gemwars Game

Plays: 3153
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!
Christmas Adventure Game

Plays: 3150
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.
Sky Wayfarer Game

Plays: 3149
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.
Shape Matcher Level Pack Game

Plays: 3145
Category: Puzzles Games
More shape matching fun with 25 brand new levels! Swap the shapes to match 3 or more, and clear all black squares to clear the level! There’s even a level editor to make your own challenging levels.
Particle Storm Game

Plays: 3142
Category: Action Games
Protect your Energy Source! Defend your way through up to 50 challenging levels fighting wave by wave of enemy hoards...
Choo Choo Puzzles Game

Plays: 3141
Category: Puzzles Games
Challenging puzzle game with lines, tracks, simple rules and a lot of thinking.
Creepy Rider 2 Game

Plays: 3127
Category: Adventure Games
He is back for more crazy stunts. Use your arrow keys to guide Creepy over to the end of each level. Enjoy these 10 fun and very challenging levels. Press the "skip" button if you can't do it, and "reset" if you get stuck! Check out Creepy Rider 1 for more practice.
Dirt Rider Game

Plays: 3123
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!
Trivia Machine Game

Plays: 3122
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
Ashley Dress Code Game

Plays: 3111
Category: Dress-Up Games
A challenging game for girls with a variety of options for players. Here you will find a lot of content and a great mix of outfits, make up, drawings, and dress code checking. Players must identify a style of clothes for one of four events (Cannes International Film Festival, a Large Business Social in New York City, the Winter Olympic Games, and the Girl Rock Festival). If the player chooses appropriate clothing, she earns stars and prizes. After the player has completed a photo session, she can then find the pictures in the photo album that she made during her last trip and move to “Drawing” mode, click on any picture and draw it like an artist. After visiting all four events, the album will be full of sweet, interesting, and colorful pictures! A player can also print the pictures and save them to make the avatar image.
Giant Walking Eye Game

Plays: 3105
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.
Invaders Zero Game

Plays: 3102
Category: Action Games
It’s a classic space invaders game mixed with ship upgrades and a challenging AI. Enjoy!
Equivalent Food Stuffs Game

Plays: 3101
Category: Other Games
A challenging Game From gazzyboy, the conveyers carries the food Orders requested, all you have to do is pick the correct food from the food court and place it in the Conveyer and succeed the Levels.
Slash Bomb Game

Plays: 3097
Category: Puzzles Games
Explosive physics slicing game - Ka-BOOM! Get 50% of the structure to fly off the screen to advance to the next level, and try to get all 3 challenging achievements.

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Tips: For things like scopes or hands which are either on or can go to the edge of the screen you should go to Player|Advanced and change the Bounds parameter to around 10 or so. This will give you a point based bounding box instead of a auto bounding box.