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Differences Between Repeat, Forever, and Repeat Until

The following table summarises the differences between the different types of loop blocks in Scratch:

Block Description Use

Repeats a set number of times. When you know exactly how many times
to repeat.

Repeats continuously without When actions need to run endlessly.
stopping.

Repeats until a specific condition is specific condition is true.
true.

Combining Different Types of Loops

Combining different types of loops means using more than one kind of loop in a script. For example, you
might use a repeat until block to perform an action until a condition becomes true, such as touching
the edge using the touching edge? sensing block, and a forever block to keep running another task

continuously. Using different types of loops together helps your script work more efficiently and perform
multiple actions at the same time.

To move a sprite until it touches the edge while continuously changing colours, use the following script:

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