IQ Test Brain Training Riddles
Paul Stelzer
Brain Puzzle: Tricky Choices
Ping Ping
Brain Puzzle - Tricky Test
MetaMars
Brain Hop: Tricky Puzzle
Kim Fu Studio
Brain Story: Tricky Puzzle
ABIGLOBAL
Impossible Date: トリッキーななぞなぞ
Pofuduk Games
Math Puzzle & Brain Riddles
Moocsoft
Brain Story Tricky Puzzle
YZ-Game
Brain Story:Puzzle & Riddles
ABC Global
Tricky Brain : DOP Puzzle
Netex Solutions