Slither.io - Slither.io is a multiplayer online video game. Players control an avatar resembling a worm, which consumes multicolored pellets, both from other players and ones that naturally spawn on the map in the game, to grow in size.

Freerice.com - This websites donates 10 grains of rice to charity for each quiz question you answer correctly.

Agar.io - The smash hit game! Control your cell and eat other players to grow larger! Play with millions of players around the world and try to become the biggest cell of all!

BeanBeanBean - This website donates 3 beans to charity for each quiz question you answer correctly.

Diep.io - Diep.io is a multiplayer action game available for web browsers, Android, and iOS, created by Brazilian developer Matheus Valadares. Players control tanks and earn points by destroying shapes and killing other players in a 2D arena.

Agar.io Clone - A simple Agar.io clone built with socket.io and HTML5 Canvas on top of NodeJS.