iPhone apps - Amazing Illusions - Best Illusion Entertainment Game of Puzzle (Fun Optical Games)

iPhone and Android Games That'll Actually Engage Your Brain

Tangram Puzzle - Must Have iPad game for baby development (early learning, color matching)

Optical Illusions for iPhone and iPad - great FREE puzzle game on the App Store!

OverColor Gameplay Overview - Color Puzzle & Brainteaser - Educational iPad game for kids, children

Find the Differences Game by Guru Puzzle Game Studio

Magic Match (iPhone)

Game Illusionization: A Workflow for Applying Optical Illusions to Video Games