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  Keys of Atlantis A Free Online Game
Mech Wars 5000 A Free Online Game
Mech Wars 5000
Ninja Annihilation A Free Online Game
Ninja Annihilation
Censorship Pig A Free Online Game
Censorship Pig
Car Mania A Free Online Game
Car Mania
Reef Attack A Free Online Game
Reef Attack
Kid Chaos X A Free Online Game
Kid Chaos X

Online difficult Games
100th Game

Plays: 3715
Category: Puzzles Games
100th is a short but deep puzzle platformer with a fairly simple difficulty curve, plus optional and difficult challenge branches (for those who feel so inclined). It is not extremely difficult to complete, but there are a lot of secrets for those hardcore completionists out there. In 100th, you play a small character with a balloon companion. There are no enemies, only environmental hazards; your fickle friend, however, makes for a uniquely challenging experience to the end. Points Earn extra bonus points if you make it to the end with the original RED balloon. If you lose the balloon, you can always get a blue one, but this will result in fewer points.
Armor Hero - Meta Slg X 2 - Full-Life Version(EN) Game

Plays: 3711
Category: Action Games
Armor Hero Series Game - Metal Slug X2 - Full-Life Version The infamous Armor Hero - Metal Slug X2 now has a full-life version! If you feel the previous version is too difficult, then this version is your savior! ASDW: Movement J: Shoot K: Jump L: Grenade You may aquire different weapons during play.
Exorbis 2 Game

Plays: 3709
Category: Puzzles Games
This is a colorful puzzle game which starts off easy but gets very difficult. Can you get the perfect score on every level? There is also a level editor so you can challenge your friends! Graphics and programming by me. Levels desgined by Bezman, who also gave a hell of a lot of support in testing and polishing the game. Couldn’t’ve been done without him!
Difficult to kill Game

Plays: 3685
Category: Shooting Games
Armed Bandits equipped with grenades start attacking the Federal bank. The guard on duty starts defending it before the additional troops arrive. Buy all the updates in the game to win.
The Brave Hussar Mobile Game

Plays: 3678
Category: Action Games
On his perilous journey, aided only by his trusted horse and spear, the brave hussar must overcome the difficult terrain and slay any orcish warriors that try to stop him.
IceCream Puzzle Game

Plays: 3642
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.
MINDGAMES! Game

Plays: 3640
Category: Puzzles Games
Ever played this game? You didn't? Shame on you! Here's the challenge: look at the (at first) three pictures of Asha scrolling before your eyes. Then try to remember what pictures came along and in what order! Easy? Let's just see how far you can come!
Lion Typing Game

Plays: 3599
Category: Education Games
a funny typing game!typing as possible as you can To avoid be eat by the lion.Type out the correct spelling of each word. Higher levels get progressively more difficult. Good luck! more games on http://TimeAndGame.com
MoneySeize Game

Plays: 3590
Category: Action Games
Sir Reginald MoneySeize II, Esq. must collect coins to fund construction of the tallest tower in the world! Jump through stages ranging from simple to ridiculously difficult in your quest to find all 1010 coins. Use your jump, double jump, wall jump and skid jump to traverse the dangerous terrain of the game’s 50 stages (40 regular, 10 secret). The soundtrack (including source files) is downloadable from this post on my blog: http://mattmakesgames.com/blog/2009/07/moneyseize-released-soundtrack.html
Halloween Ghost Rider Game

Plays: 3576
Category: Adventure Games
Help the legendary Ghost Rider but now with the pumpkin head, through this journey on the cemetery and help him overcome all the dangerous obstacles that are in his way. Use your unlocked bike in 12 intense and unique levels and tray to make it in one piece to the finish line. Collect fireballs to to get your final score high and unlock new bikes after each 3 levels finished . Each level it’s different then the other levels and while you progress in the game the terrain will be mode difficult to overcome, but don’t worry the new bikes will help you on your way. There are explosive pumpkins on the levels if you touch them they will explode and will blow you high in the sky. Just balance your bike when you fall down and tray to make it to the finish line.Good luck and have fun!
Piano Typing Game

Plays: 3569
Category: Education Games
a funny rhythm typing game!Type out the correct spelling of each word in order to destroy them. Higher levels get progressively more difficult. Good luck! more games on http://TimeAndGame.com
Rigoberto, The Yak Game

Plays: 3566
Category: Adventure Games
Ok this project took us two weeks. The original story and idea is made by Facundo Balboa (MonoFlauta in Newgrounds) he also is the programmer, the artist Is Huw Millward (Neverzonegaming in Newgroudns) and voices by Fro (Newgrounds account). This story is about a yak called Rigoberto that travels to find something… it’s a difficult game, but not an impossible one.
The Nao's Shanghai Game

Plays: 3531
Category: Puzzles Games
Clear the board of stones by finding all the matching pairs. Help to Nao to complete the most difficult Shanghais of the world.
LL Bike Game

Plays: 3528
Category: Driving Games
Ride your dirtbike over all the obstacles. Levels start out quick and easy, then get more difficult.
LightGrid Game

Plays: 3519
Category: Puzzles Games
Fun little 2D grid puzzle game. Race against the clock to solve the grids and progress through the levels. Or polish your skills in Practice mode. enjoy
Blockount 2 Game

Plays: 3489
Category: Puzzles Games
Count the blocks number. If you guess the right number, you score points. The more you score, the more it will be difficult. Game #2
Light Cubed Game

Plays: 3478
Category: Puzzles Games
Light Cubed is a simple, pick-up-and-play game that's easy to learn and difficult to master. Place white blocks on the screen and they fill up the bar at the bottom of the screen. Fill the bar to complete the level. Simple, huh? Well no. As the levels progress, things begin to get in your way. You'll be able to complete the 12 levels in this short puzzle game fairly easily... but that's only the beginning. Although simple, there are many exploits and tricks you can use to shave 100ths of a second off your time. Use your uber micro to replace bar-sapping blocker blocks when they're not required. Riskily place white blocks in dangerous levels to get the lead over rivals and their times. Go through all 12 levels at once to score the ultimate prize- the campaign lowest time! Give this game a quick go and play along to the noisy trance beat. You never know, it could even be fun!
Rocket Typing 2 Game

Plays: 3454
Category: Education Games
a funny typing game!Help rocket launching.Type out the correct spelling of each word. Higher levels get progressively more difficult. Good luck! more games on http://TimeAndGame.com
Eruption Game

Plays: 3440
Category: Action Games
Dodge fireballs (and falling boulders on Hard difficulty) and navigate around rocky outcroppings that jut out from either side of the passageway as you fly through an erupting volcano! The longer you survive, the higher your score but the more difficult the game becomes.
Mahjong Invasion Game

Plays: 3439
Category: BoardGame Games
Play this futuristic mahjong with great special effects. If you are a master of mahjong, this game will surely like. The semi-transparent sheets will make it difficult that you send the best score in the world. Set includes table of winners.

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Tips: For a scope shot set the Player weapon speed to zero. Change the player weapon graphic to a circle that gets quickly smaller and then stretch the frame out around 4000 frames so it doesn't repeat itself.