As of 2015, a good place to find free Jumbo puzzle games online is the Addicting Games site. Jumbo puzzles are updated weekly.
The games on Addicting Games are free to play, but users must create free accounts in order to collect game tokens. The site offers a variety of games, including time management, board games, action games, hidden object games and adventure games.
Another good location for free Jumbo puzzles is Shockwave. The site also provides players with a variety of puzzle games. The games can be played online or downloaded for offline play. Players can also share games with friends via email and Facebook.