- *Challenge You*: Mariasme Wins February's Best CY Medal of th
- *Game - Play your winners
- *Perpetual Challenge Group
- 15 Challenges - Photo Contest
- A3B CHALLENGE
- AGCG Transcending Challenge - AGCG Quarterly and Yearly Contests
- Anything Goes! Challenge Group-BACK PLAYING, COME JOIN THE FUN!!
- Behind fences !!
- Carp Anglers Group
- Challenge Clubs Hall Of Fame
- Chats dans l'art-Cats in art-Gatos en el arte-Gatti nell'arte
- Flickr Challenge Group!
- Flickr Good Panda Photo Contest
- FlickRussian: говорим по-русски!
- FRIENDLY CHALLENGES
- I Spy! Challenge: CLOSED due to lack of Support
- Lifeless Faces - always something to talk to
- Matchpoint Cafe
- OM System, Olympus OM-1. OM Digital Solutions OM-1
- OM-1 Photo
- One A Week 2024
- Panasonic Lumix G9II / G9M2 / G9Mk2 / G9 Mark 2
- Parallel Realities
- pre*Game Challenges*
- pre*Game DUEL Showcase
- pre*Game Sweep Showcase
- Sectio Aurea
- Show Biz Challenges - CLOSED due to lack of Support
- Sigma 65mm F2 DG DN Contemporary
- SMS - Street Macro Society
- Super Hero Challenge Group. CLOSED DUE TO LACK OF INTEREST
- The Challenge Factory - Photo Contest Group
- The Challenge Factory: Ultimate Grind Winner's Gallery
- The Challenge Group Game
- The Challenge Group Game Winners Challenge
- The Mother of All Challenge Groups - SADLY CLOSED
- The Pinnacle - CLOSED - Thank you for the good times
- The Storybook Challenge Group*Weekly Ch. please VOTE!
- Thumbs Up Challenges NEW RULES AND FORMAT
- You Rock! Challenges-SLEEPING because the lack of participatio
- ◆ Challenge Club Champions ◆
- ◆ CHALLENGE CLUB ◆ Come And Try Your Luck In The Matches ◆