GameBlox

https://gameblox.org/

Gameblox is a game editor that uses a blocks based programming language to allow anyone to make games. It's free and no downloads are required. You can make games online that you can play both on this site and on your mobile device.

MIT - Game Design

Design -> Blocks -> Play -> Save

https://education.mit.edu/portfolio_page/gameblox/

По сайту - https://gameblox.org/ очевидно, что это продолжение Scratch (Blockly) для мобильных устройств - создание игр.