Anyone can learn computer science. Make games, apps and art with code.

Game Lab works best on a desktop or laptop computer with a mouse and keyboard. You may experience issues using this tool on your current device. You may experience issues using …

Because sprites are just values stored as variables, they don't automatically get drawn on the screen. The drawSprites() block tells Game Lab to draw all of the sprites that have been …

You may imagine that a typical app has a number of "screens" or views that a user goes through as part of using your app. Below is a typical example with a welcome screen, a screen that …

In Game Lab, Animations are drawings or other images that you can use to change the look of your sprites. You can use the sprite.setAnimation() block to change your sprite's animations to …

Game Lab is a tool built with JavaScript that can be used to create art, games, and animations. Read more about Game Lab's commands in the Game Lab documentation.

Each time the code inside draw runs is like a new page in a flipbook. By making small changes to what's drawn each time, you can use Game Lab to create animations.

There are four types of collisions available in Game Lab: displace, collide, bounce, and bounceOff. These blocks will cause a certain type of interaction between the sprite and its …

If your program isn't running or the variable hasn't yet been assigned a value, the watcher will report a value of undefined. This isn't an error, it just means that the variable hasn't yet been …

Text Properties There are many CSS properties available that allow you to style the text on your page. Here's a review of some of the more common ones