This game comes with washable markers, instruction and quick start guides, and three activity books that cover 50 game design concepts, 30 instructional activities, and over 100 example games. You also need to download the Pixicade app available for iOS and android. The app only requires a camera and an internet connection. (iOS 8.0 and up, android 6.0 and up).
Promising review: "Man I love this thing, but my 8-year-old and 6-year-old sons love it even more. We’re those parents who are a little fanatic about 'screen time' with our kids. Let me tell you something, MOST of the time is spent with the kids building their game. The markers, paper, and most importantly their imaginations of drawing new games are 90% of the fun because they know that their drawing will eventually ~come to life~ on the iPad. It sounds unbelievable, but it’s true. The different colors are used to create different things that the game automatically recognizes on paper — e.g., use 'red' to draw hazards; use 'green' to make your character that can move, etc. My boys draw anything and, like magic, the screen brings it to life and the remaining 10% blows their little minds (and the parents minds, too). Not really sure how it works, but we have a giant notebook full of different drawings and games, two boys who can’t stop using it, and two parents who are totally OK with this kind of 'screentime.'" —Lil
Get it from Amazon for $24.99+ (also available in a 2,000-game size).