Hard

3D Keep it up's	Fuel Station 612	RUN!! (2)
8bit Infinity	Geometric sums: solve4 variable algebraic equations in 2 minutes	Safe Landing
Addictive Maze: Impossible	Get It Dark	SCGMD4
Agile Flyer	Get Slightly Annoyed At This Game	Security
Air Race	GhostBall	Simple
Another Hard Game	Gil	SLAM
Attack of the Buttons	goleftandright	SlipSteel
Avoid Blue	Gravity Mouse	Smile
Balloon	Hard Cows Slider Puzzle	Sound Memory Game
BalloonRide	Hard Mission	Space Brawl
BattleNumbers	Harder Bounce	Space Race: Taken To The Next Level
Beach Ball	Hardest game in the world 6	SpaceBall 2
Black'nWhite 2	Hardy Game 2	SpaceShip: Time Attack
Blob Tower Defence	Here To Collect	Sparkmaze 2
Block Survivor	Heth	Speed
Blockage 2	Hollow	Speedy maze
Block_Adventure	Hop The Gap Again	Spin The Black Circle 2
Bloom hard way	iHeropad	StarCatz
Bloons Insanity	Impossible 2: Jungle Escape	Sticky Blocks
Botsi	impossible game	stop the squares!
Bounce Up	impossible Tic Tac Toe 2	Super Hybrid Car
Boxes	Impossible Tic Tac Toe aka Inky Pinky Blinky	Super Letter Game
brain stars	Island Survival	Super Mega Bot
Brick Galaxy	IWBTG - Prologue	Super Tiny Leap
Bubblius 2	Japanese Sudoku	Sweet Girl Hard Puzzle
Bug dies a lot	JetPac	Synonymous
BulletLAB	JetPak DX	Tetri 2
Burst Cannon	Jewel Spinner	Tetri 2.5
Can You Guess It?	Jigsaw: Rocks	TetWord PRO
Candy Balls	Jigsaw: Roof	The Car Park
Cartoon Escape	Jigsaw: Turtles	The Count
Casus	Jump over!	The Cross Adventure Plus
chisla	Just Another Platformer	The easy to beat but impossible to ace game
ChooChoo Like a Hobo	Just Another Shadow	The Hard Quiz
Colloid	Knife&Hand2	The Hard Quiz 2
Colorful Shooter: Bullet Hell	Labirints	The Hard Quiz 3
CoNami Challenge	Level X:Hardest level in the world	The Hardest Flash Game Ever
Connect The Dots	Linx: Hard Levelset	The Hardest Game
CopyMeDo	Lost in Space! The flash game	ThE ImPoSsiBlE qUiZ SqUaReD
cover.it	Louis-Maze	The Infinite Maze
Crazy Lander	Math	The Landing SpaceShip 2
Crossword puzzle	Max Connect 2	The Parking Car
CUBAL	Maze	The Parking Truck
Cube Crush	Maze in Me	The Pendulum
Da Tap Tap Game	Minescape	The Riddle Game 3
Dangerous Dungeons	Monday Morning TV	The Snake Game
Danm creeps survival mode!	Mongada	The Sound Walk
Day Of Valor	Mongada3	The Super Impossible Test
DE BESTELLING	Monster Castle Defense	The Worlds Hardest Game
Delusion	Monster Castle XP	Tile Ball
Delusion Puzzle	Mouse Maze	Tileball
Destroy Blocks 2.1 Hard	Music Bounce	TimedHouse
DestructaBox	My Lion's Breath Smells Like Hot Dogs	Tiny Airships
Dirgantara - First Phase	myMaze	Too Hard Sudoku!
DNA	Navigate	Tower Defense
Donkey Dilemma	NeonCube	Trap World
Doodle Ramps	Nerdex	Trilogic
Dot Dash	Never Stay Close	Troll Guardian
Drains	New York room Escape	Typhoo
Drop Your Ball	New York Slide Puzzles	Uga the caveman
Dshield Defender	Orboid	Ultimaze
Dual Input Defender	Panic Killing - Zombie Attack	Under Ball
Easy As..	Paradoxion Express	Valkyrie: Battlefield
Ectasy Of Gold Coins	Path Finder	Vector Dash
eggs	Peatones Intrépidos	Vector Racing Game
Energy Leak	PinPon	Very hard space Jigsaw
Esc (hard escape game)	Pong-a-Roll	Virus Brick Breaker
Explosive click	Propellers	Vuvuzela Crisis
Eye of the Storm	Psychedelic_Food_Chain	Warehouse Worker 2
Family Guy Quizmania	Quadratus 2	What Are The Lyrics - Metallica
Fifteen Number Sliding Puzzle (n=16)	Quietus	Who said this quote?
FISP	RandoMind	Word Guess
Five	Rebus	Worlds Hardest Maze Game Level 1
Flee The Flame	REDxBLUE	Worlds Hardest Maze Game LV 2
Floating Boxes of Wonder	Resurrection: Genesis	Worlds Hardest Maze Game Lv 3
Follow The Rectangle	Retro Space	Wrangle 2
Forgotten Shadow	Retro Toys	Xpletter
Fragger	Robocity	zombie guard
Fruitazzle Lite Edition	Roll the Ball 3