PBS kids Cyber chase Thinking Games
Prodigy Written puzzles (not online games)
Cool Math Stategy, Skill, Logic & More
Good Riddles Now (written riddles, not online games)
Exquisite Minds Thinking Games
Puzzles online (printables and playables)
Creativity Games (written, no online games)
Jump Start Critical Thinking Games (all ages)
Childhood 101 (younger games, offline, manipulative based)
81 printable thinking activities
Flintbox Brain Games (off line)
List of various websites for thinking
PBS kids Cyber chase Thinking Games