The remaining games are listed below (Updated 20 November)

Apokalyx
Async Racing
Battle Dawn
Belial Chapter 2
Bubble Tanks Arenas
Bubble Tanks TD 1.5
Bunny Flags
Caesary
Castle Wars 2
CellCraft
Chaos Faction 2
Civiballs 2
Coma
Cover Orange Players Pack
Crush The Castle 2
Deadly Neighbours
Depict1
Don't Shit Your Pants
Dream World
Dungeon Defender
Earl Grey and This Rupert Guy
Elements
Enigmata
Enough Plumbers
Epic Battle Fantasy 3
Epsilon
Factory Balls
Factory Balls 2
Fantasy Online
Feed the King
Five Minutes to Kill (Yourself)
Fold
GemCraft chapter 0
Ghost Hacker
Globetrotter XL
GlueFO 2.0
Gravitee 2
Gravitee Wars
Great Dungeon in the Sky
Great Game 1/5
GunBot
Haunt the House
Heir
Heroes of Gaia
Hero's Arms
Homerun In Berzerk Land
Hostage Crisis
Hover Bot Arena
How to Raise a Dragon
I Love Traffic
Indestruct2Tank
IntoSpace!
intrusion
Johnny Rocketfingers
Learn to Fly
light-Bot
Lightbot 2.0
LightSprites
Line Game
Little Red Riding Hood
Loved
Lucky Tower
Luminara
MAD: Mutually Assured Destruction
Mastermind: World Conquerer
Max Mesiria Chp1 RPG
Maze Stopper 2
Medieval Rampage 2
Microbe Kombat
MindScape
Moby Dick - The Video Game
Momentum Missile Mayhem 2
MoneySeize
Monster Master
Monster Slayers
Monsters' Den
More Bloons
Morningstar
Mud and Blood 2
Music Catch 2
My Pet Protector
Necronator
Notebook Wars
Nuclear Eagle
Open Doors 2
P.O.D.
Pandemic: American Swine
Papa Louie: When Pizzas Attack! - Kongregate Version
Papa's Pizzeria
Perfect Balance
Perfect Balance 2
Pillage the Village
Pirate Defense
Pixel Legions
Pixel Purge
Pixelvader
Platform Racing
Protector IV
Protector: Reclaiming the Throne
Pumpkin Remover 2
Pwong 2
Pyro II
Ragdoll Avalanche 2
Rage 3
Reachin' Pichin
Red Remover
Reincarnation:  All Hallow's Evil
Reincarnation:  Out to Sea You Die
Reincarnation:  The Backfire Of Hell
Road of the Dead
Robot Wants Fishy
Robot Wants Ice Cream
Robot Wants Puppy
Run
Run Elephant Run
Sacred Seasons 2 MMORPG
SandStorm Racing
Scriball
Scribble!
Seed of Destruction
Seven Deadly Sins
Shield Defense
SHIFT
SHIFT 3
SHIFT 4
Shore Siege!
Sieger
Sling Junior
Slingoween
Smileys-War
Snail
Sola Rola - The Gravity Maze
Spacecraft
Speck Oppression
Sprout
Starcom
Starfighter: Disputed Galaxy
Stick Arena: Ballistick
StormWinds 1.5
Super Energy Apocalypse : RECYCLED!
Super Stacker
Synapsis
Tactics 100 Live
Tangerine Panic!
Tarnation
Terrascape
The Endless Zombie Rampage
The Heist
The Last Canopy
The Last Stand 2
The Light Temple
The Necronomicon
The Next Floor
The Several Journeys of Reemus
The Several Journeys of Reemus: Chapter 1
The Several Journeys of Reemus: Chapter 2
The Several Journeys of Reemus: Chapter 3
The Trader of Stories
Thing-Thing 3
Thing-Thing 4
Thing-Thing Arena 2
Thing-Thing Arena 3
This is the Only Level
Time Kufc
Tower of Greed
Two Rooms
Vector Conflict: The Siege
Vertical Drop Heroes
Viricide
Wake Up the Box 2
Warbears
Warbears Adventures : An A.R. X-Mas
WetDike
Whiteboard Tower Defense
WhiteboardWar: ChopRaider
William and Sly
Wings of Genesis
Wizard's Run
Wooden Path
Zombies Took My Daughter!

If you want to add topics check QBH for topics as more of them already have hacks.

This is a largely updated list that Vxd made and never bothered much with.

Click through games that just need walkthroughs and 5 minutes have been removed. Example: Reincarnation.

Games that I've played and have found forum hacks for on this site have been removed from the list.

You're welcome.

Async Racing
Caesary
Chaos Faction 2
Coma
Cover Orange Players Pack
Deadly Neighbours
Depict1
Don't Shit Your Pants
Dream World
Earl Grey and This Rupert Guy
Elements
Fantasy Online
Fold
Globetrotter XL
Gravitee 2
Gravitee Wars
Great Game 1/5
Heir
Heroes of Gaia
Hero's Arms
How to Raise a Dragon
intrusion
Johnny Rocketfingers
LightSprites
Little Red Riding Hood
Loved
Luminara
MAD: Mutually Assured Destruction
Mastermind: World Conquerer
Maze Stopper 2
Medieval Rampage 2
Microbe Kombat
MindScape
Momentum Missile Mayhem 2
Monster Master
Monster Slayers
More Bloons
Morningstar
Nuclear Eagle
Pandemic: American Swine
Perfect Balance
Pyro II
Ragdoll Avalanche 2
Reachin' Pichin
Robot Wants Fishy
Robot Wants Ice Cream
Robot Wants Puppy
Run Elephant Run
SandStorm Racing
SHIFT
SHIFT 3
SHIFT 4
Sola Rola - The Gravity Maze
Speck Oppression
Sprout
Starcom
Starfighter: Disputed Galaxy
Stick Arena: Ballistick
StormWinds 1.5
Super Energy Apocalypse : RECYCLED!
Synapsis
Tactics 100 Live
Terrascape
The Last Canopy
The Light Temple
The Next Floor
Time Kufc
Vector Conflict: The Siege
Vertical Drop Heroes
Viricide
WetDike
William and Sly
Wings of Genesis