- Asylum (riddles and challenges)
- Beat My Riddle
- Sport and Games Riddle
- Extremely Dingbatted!
- Justeazy's Riddle
- Tsunami Riddle
- Final Quest Genesis
- Riddlegrim
- The Logix Riddle
- The Logix Riddle II
- The Logix Riddle III
- The Phonetix Riddle
- The Phonetix Riddle II
- Renzolj's Riddle
- Wollemhsram
- Music Riddle
- Tuzzak - A riddle by Calculus
- The 39 Steps
- The URL Riddle
- Phobos III (Phobos 3)
- Who's got game - Shahar C's games riddle
- Mr. Logic's "Pick-a-Path" Riddle
- The Protogon
- Impossible Riddle
- Mysery Riddle
- Amnesya (Special thread for level Stop)
- Hardest Riddle
- QuizArena
- Mr. Logic's "Digiddle" Game -- Win $25 Cash!
- A Paradoxically Perplexing Problem of a Puzzle
- Enigma, The Mystery
- Ludicrous Lounge
- Clueblues
- QuizArena - Harry potter
- Alex Riddle
- Twilight Quiz
- Halie's Riddle (Round 1 & 2)
- Riddle Odyssey
- SnowMen's Riddle
- Just Desserts!
- Random Riddle Rage
- Riddle Odyssey 2
- World of IQ - Intelligence Test
- Riddle Riddle
- Scarygami Riddle
- Amgine
- Ikode Online Riddle
- Banana Riddle
- Tumesya
- Christmas Riddle Game
- A riddle about nothing
- Alphabet Riddle
- Horror Riddle
- Black Friday Riddle
- Awesome Riddle 3
- Quest'n
- Riddle With Me
- Try 2 Hack
- Midnight Riddle
- Nao's Ten Riddles - Vol.3
- Rbud's "Christmas Present" Riddle
- A Noel Riddle
- Composer Riddle
- Dolls
- BTB Riddle
- Twilight Saga Quiz 2
- Random riddle
- Twilight Saga Quiz 3
- Password
- Riddle Of Cities
- Pop-Up Riddle...
- 2poam riddle
- Searching For Hints On Specific Riddle Levels
- Midnight Hour
- Greek Riddle
- Anagramia
- Revenge
- Mind Smasher Online Game
- MusiGami
- The Calculator...
- BrainBasher
- Infinity Riddle
- Treasure Challenge
- Mysterious One
- New from Bimbogami : Movigami
- Nothing But Morse
- Visworld
- India riddle
- Video Game Riddle
- Soulmanager
- The New Riddle Riddle
- Notyoff
- Phrases and sayings riddle
- Da vinci code -Online treasure hunt
- Damn This Game
- Sapiens: An open riddle
- Home Cinema
- LuLu's Riddle
- Disney Movie Riddle
- Visworld2 - the sequel
- 50 comedies riddle
- Vortex
- Pc games riddle
- Movie Madness!
- Snailgame 2
- Snailgame
- Password 2
- Execute Zero
- The Eclectic Riddle
- Alpha Riddle - 2009
- Elements, etc.
- The Secret Chronicle
- Daily Scavenger Hunt
- Museum Discovery
- Cry Me A River
- Play This Thing
- WIRED Magazine code
- Super Simple URL Game #1
- Escape Riddle
- Mathelex
- The Cryptic Canvas
- The Danger Zone
- Byzantine Riddle
- amnesya (special thread for level 53 Wicked Wizard)
- Mr Anagrams is Back! - Anagrollywood
- Unsolved : 14 (aka Unsolved:14)
- Riddle of Anubis
- Little Red Riddling Hood
- The Last Labyrinth : The Legend of the Secret Chronicle
- House of Riddles
- aLdc riddles
- Christmas in July riddle
- Plopriddle
- Qweb's Online Riddle
- QWeb Riddle 2
- Pterotn
- Random Riddles
- Logic Crypt
- Web Riddler
- Jaor
- Phobos III.V
- Everything Riddle (Riddle 1)
- D14 ~ Online Riddle
- Epic TV Riddle - 100 levels
- Nao's sticky riddles - vol.2
- Riddle Castle
- Mindy
- The People's Riddle
- Dr. Enigma
- Ultimate Online Riddle
- Real Riddles
- Nicky's Riddle
- Voixbox Online Detective School
- Doommasters Riddle
- Creo's Riddle
- Cross's Curiosities - A Unique Antique Shop
- Kazowieriddle
- The Alice Riddle
- Boke Riddle
- Riddle of Anubis 2
- Suomi-Riddle
- Titled Puzzle
- The Sherlock Holmes Riddle
- Only Puzzles!
- Mystery Game
- Original Riddle
- Historiddle
- Klueless 5