What Scratch is and why it works for beginners

Scratch is a free visual programming language made by MIT where you build games by snapping together colored blocks instead of typing code. You don't need to install anything — you work in your web browser at scratch.mit.edu, and your projects save to a free account. Scratch handles all the hard parts of game engines (collision detection, sprite animation, sound playback) so you can focus on the logic: what happens when the player presses a key, what happens when two objects touch, what happens when you win or lose.

The blocks are designed to read like English. A block labeled "move 10 steps" does exactly that. A block labeled "if touching [sprite name] then" lets you check collisions. You stack them in order, and Scratch runs them from top to bottom. This visual approach means you see the structure of your game's logic without getting stuck on syntax errors — a missing semicolon won't break your project.

Scratch runs on Windows, Mac, and Linux, and works on tablets too. The only real limit is that Scratch projects run inside the Scratch editor or on the Scratch website, so you can't package them as standalone apps for phones or consoles. But for learning how games actually work, Scratch removes every barrier between your idea and a playable result.

Key Takeaways

  • Scratch is a free browser-based tool where you build games by dragging and snapping together colored blocks that represent code.
  • You need a free Scratch account to save your work, and you can share finished games directly from the Scratch website so others can play them.
  • Every game in Scratch uses sprites (characters or objects), a stage (the background and play area), and scripts (the blocks that control what happens).
  • The most common beginner mistake is putting all your game logic in one script; breaking it into separate scripts for each sprite makes debugging and changes much easier.
  • Scratch has thousands of example projects and tutorials built into the editor, so you can learn by remixing and modifying games others have already made.

Setting up your account and opening the editor

Go to scratch.mit.edu and click "Join Scratch" in the top right. You'll need a username, password, and email address. Scratch will send you a confirmation email — click the link to set up your account. Once you're logged in, click "Create" in the top left to open a blank project.

The editor has three main sections. On the left is the block palette — colored categories like "Motion," "Looks," "Sound," and "Control." In the middle is the code area where you drag blocks and snap them together. On the right is the stage — the white rectangle where your game actually runs. Below the stage is the sprite list, showing every character or object in your game.

Scratch saves automatically as you work, so you don't have to worry about losing your project. You can rename it by clicking the title at the top. If you want to start from a template instead of a blank project, click "Create" and then scroll down to see starter projects for games like Pong, Flappy Bird, or platformers.

Understanding sprites, the stage, and scripts

A sprite is anything that moves or acts in your game — the player character, enemies, projectiles, collectibles. Every sprite has a costume (how it looks), a position on the stage, and scripts (the blocks that control it). The stage is the background and the play area itself. It can also have scripts — usually the ones that manage the overall game state, like keeping score or detecting when you've won.

When you open a new project, Scratch gives you one sprite called "Sprite1" (usually a cat icon). You can rename it, change its costume, or delete it. To add more sprites, click the icon that looks like a cat in the bottom right of the sprite list. You can paint a new sprite, upload an image, or choose from Scratch's library of thousands of pre-made sprites.

A script is a stack of blocks attached to a sprite or the stage. The script runs when something triggers it — usually a key press, a click, or a broadcast message from another sprite. You can have multiple scripts on the same sprite, and they all run at the same time. This is how you make a character move with arrow keys while also checking if it's touching an enemy.

Building your first game: a straightforward clicker

Start with the simplest possible game: click the sprite to increase your score. Delete the default cat sprite and add a new one — something colorful from the library. Click on the sprite in the sprite list to select it, then click the "Code" tab above the stage.

In the block palette, click the red "Control" category and drag out a "when this sprite clicked" block. This block triggers whenever someone clicks the sprite. Below it, drag a "change [score] by 1" block from the orange "Variables" category. If you don't see a "score" variable, click "Make a Variable" and name it "score." Now click the sprite on the stage — your score should go up by 1 each time.

To display the score on screen, go to the Variables category and check the box next to "score." You'll see the number appear in the top left of the stage. To make the game more interesting, add a "play sound" block from the blue "Sound" category so the sprite makes a noise when clicked. Drag a sound block into your script, click the dropdown, and choose a sound from the library.

That's a complete game. It has a win condition (higher score is better), feedback (sound and a visible number), and interaction (click to play). Now you can remix it: add a timer that counts down, add enemies that decrease your score if you click them by mistake, or add a "reset" button that sets the score back to zero.

Making a game with movement and collision

The next step is a game where the player moves around and something happens when they touch an object. Create two sprites: one for the player and one for a collectible (a coin, apple, or star). Select the player sprite and go to the Code tab.

To move the player with arrow keys, use blocks from the blue "Control" category and the blue "Motion" category. Drag out a "when [key] pressed" block, and in the dropdown choose "up arrow." Below it, add a "change y by 10" block — this moves the sprite up 10 pixels. Repeat this for down arrow (change y by -10), left arrow (change x by -10), and right arrow (change x by 10). Now you can move the player around the stage with arrow keys.

Next, select the collectible sprite. Add a script that says "when this sprite clicked" or "when touching [player sprite]" — use a block from the green "Sensing" category. When the player touches it, add a "go to random position" block from the Motion category so the collectible jumps to a new spot. Add a "change [score] by 1" block to increase the score. You now have a game where the player moves around, collects objects, and the score goes up.

To make it harder, add a timer. On the stage (not a sprite), add a script that says "when green flag clicked" — this runs when someone clicks the green play button. Add a "set [timer] to 30" block, then a "repeat until [timer] = 0" block, then inside it a "wait 1 seconds" block and a "change [timer] by -1" block. Check the timer variable so it shows on screen. When the timer hits zero, add a "stop all" block to end the game.

Debugging when your game doesn't work

The most common problem is that a sprite doesn't move or respond. First, check that the script is attached to the right sprite — click the sprite in the sprite list and make sure you're looking at its Code tab. Second, check that the script has a trigger block at the top — "when green flag clicked," "when key pressed," or "when this sprite clicked." Without a trigger, the script never runs.

If a sprite moves off screen and disappears, add a "if on edge, bounce" block from the Motion category. If two sprites aren't detecting collisions, make sure you're using a "touching [sprite name]" block from the Sensing category, not just checking their positions. If your game is too straightforward or too hard, change the numbers in your blocks — move 5 steps instead of 10, wait 2 seconds instead of 1, change the score by 5 instead of 1.

Scratch has a built-in way to watch what's happening: right-click any variable (like score or timer) and click "slider" to add a slider you can drag to test different values. This lets you see exactly what number a variable has at any moment, which helps you spot logic errors. You can also add a "say [hello]" block to any sprite to make it display a message — use this to check if a script is actually running.

Sharing your game and learning from others

When your game is done, click "Share" in the top right. This makes your project visible on the Scratch website so anyone can play it. You can add a title, description, and instructions so players know what to do. Scratch will give your project a URL you can send to friends.

The best way to learn Scratch is to play games other people made and then "remix" them. Find a game you like on the Scratch website, click "See Inside," and you'll see all the code. Click "Remix" to make your own copy that you can edit. Change the sprites, add new features, or combine ideas from multiple games. Most Scratch creators expect their projects to be remixed — it's how the community learns.

Scratch also has a "Tutorials" section in the editor with step-by-step guides for specific game types: platformers, maze games, racing games, and more. Each tutorial shows you the blocks you need and explains what they do. Following a tutorial while building your own game is much faster than starting from nothing.

Frequently Asked Questions

Can I make a multiplayer game in Scratch?

Scratch doesn't have built-in multiplayer, but you can make turn-based games where two players use the same keyboard — one uses arrow keys and the other uses WASD, for example. For real-time multiplayer, you'd need to move to a more advanced tool like Unity or Godot, which are free but have a steeper learning curve.

How do I add music or background sounds to my game?

Click the "Sounds" tab above the stage and click "Choose a Sound" to pick from Scratch's library. Then use a "play sound" block from the Sound category in your scripts. You can also upload your own audio files (MP3 or WAV format). For background music that loops, use a "play sound until done" block inside a "forever" loop.

Can I make my Scratch game work on a phone or tablet?

Scratch games run in a web browser, so they work on phones and tablets if you visit scratch.mit.edu on mobile. However, they're designed for keyboard and mouse, so touch controls feel awkward. Scratch does support some touch blocks, but building a game that feels good on mobile requires extra work. For mobile games, you'd eventually want to learn a tool like Unity or Godot.

What should I do if my sprite gets stuck or the game freezes?

Click the red stop button (the octagon icon) above the stage to stop the game. Then check your scripts for infinite loops — a "forever" block with no way to exit it will freeze the game. Make sure any "repeat" or "forever" block has a condition that lets it stop, like "repeat until [timer] = 0" instead of just "repeat 100."

How do I make my game harder as the player progresses?

Use a variable to track the level or score, then change the game based on that number. For example, add a "if [score] > 10 then" block that makes enemies move faster, or a "if [level] = 2 then" block that adds a second enemy. You can also use a "change [speed] by 1" block inside a loop so the game gradually gets harder the longer you play.