Wall Street Journal:

Three months ago, Steven Howse struggled to pay rent. Now, the 32-year-old developer is trying to keep his hit videogame running smoothly as it pulls in more than $100,000 in revenue daily.

In “Slither.io,” snakelike creatures compete to gobble up food. The free multiplayer game leapt into the top 10 most-downloaded apps alongside stalwarts such as Facebook and YouTube soon after launching March 25 on iOS and Android, fueled by word-of-mouth from social gamers.

“Slither.io” has been downloaded more than 68 million times across mobile devices and averages 67 million daily players on web browsers, Mr. Howse said.

This is a pretty impressive story. The game is as simple as can be, and is free. You can play on the web here. Eat the food, avoid the worms. Move your mouse to steer.