Bootstrap Zero - Open-source, free Bootstrap templates collection.
The Internet Arcade - 900+ classic arcade games, no quarters required.
Material Design for Bootstrap 4 - Powerful and free UI KIT for the newest Bootstrap 4 and Material Design
Pac-Man in Google Maps - Play Pac-Man inside Google Maps
Bootstrap Magic - Create your Bootstrap 4.0 themes easily with magic
SnakeLogic - The puzzle based snake game