To update, download and run the new installer.

To update, download the new app and replace the old one.

If you installed TurboWarp Desktop from an app store or package manager, download the update from there. Otherwise, manually reinstall the app the same way you installed it.

To update, reinstall the app the same way you installed it.

Features

Speed

By compiling projects to JavaScript, they run 10-100x faster than in Scratch.

Lighter than Scratch

Uses significantly less memory and idle CPU usage than Scratch.

Dark mode

Your eyes will thank you.

60 FPS

Replace Scratch's default 30 FPS with any framerate of your choosing or use interpolation. convert chd to iso repack

Packager

Built in packager to convert projects to HTML files, zip files, or applications for Windows, macOS, or Linux.

Custom stage size

Change Scratch's default 480x360 stage to any size you like.

Extensions

Includes new extensions such as gamepad and stretch, and supports loading custom extensions. Before we look at the "how," we must understand the "why

Remove limits

Remove almost any of Scratch's arbitrary limits, including the 300 clone limit.

Backpack

Put scripts, costumes, sounds, or entire sprites into the backpack to re-use them later.

Tools for developers

Searchable dropdowns, find bar, jump to block definition, folders, block switching, and more. This generates a

Tools for artists

Full support for transparency, an improved costume editor, onion skinning, and more.

Cat blocks

Enable the cat blocks addon to get cute cat blocks any day of the year.

And a lot more.

Source code

Privacy

Report bugs on Scratch

Report bugs on GitHub

Before we look at the "how," we must understand the "why." You cannot repack a file you cannot edit.

Cause: Some CHDs include subchannel data (CD+G, EDC, ECC). A raw ISO discards this. Solution: Extract to BIN/CUE format, which preserves subchannel data:

chdman extractcd -i game.chd -o game.cue

This generates a .cue file and a .bin file. Use the .cue file with your emulator.

If you need a CHD after editing:

For mixed-mode discs (audio tracks), pass the CUE referencing audio BINs so chdman preserves tracks.

Verify the CHD by loading in the intended emulator.

chdman extracthd -i "game.chd" -o "game.iso"

chdman is a tool specifically designed for working with CHD files. If you're on Windows, you'll need to download chdman as part of the MAME (Multiple Arcade Machine Emulator) tools or build it from source. On Linux, you can install it via your package manager.

Converting CHD to ISO is only the first half of the repacking process. Here is the full workflow a repacker would follow:

isoinfo -d -i final_repacked.iso
md5sum original.iso final_repacked.iso

Standard decompression (chdman extract) produces a raw ISO that may contain:

A repack rebuilds the ISO from the extracted file tree, applying contemporary standards.

Install on Windows 10 and later

Get it from the Microsoft Store to enable automatic updates.

Get it from

Microsoft

Or download an installer.

TurboWarp Desktop uses a free code signing provided by SignPath.io, certificate by SignPath Foundation.

Install on Windows 7, 8, and 8.1

These versions of the app have the same features but are slower and less secure. Support will be removed at an unknown time in the future. If a Windows SmartScreen alert appears, click "More info" then "Run anyways".

Install on macOS 12 and later

Install from the Mac App Store for automatic updates.

Download on the

Mac App Store

Or download the app manually. Open the .DMG, then drag TurboWarp into Applications. If it tells you that TurboWarp already exists, choose "Replace".

Download for macOS 12 and later

Install on macOS 10.13 - 11

These versions of the app have the same features but are slower and less secure. Support will be removed at an unknown time in the future. Open the .DMG, then drag TurboWarp into Applications. If it tells you that TurboWarp already exists, choose "Replace".

Convert Chd To Iso Repack May 2026