Limitations

As this is in a very work in progress state, you will encounter many bugs, crashes, and things that will just not work.

General Limitations

Some blocks may lead to crashing/unintended behavior (please open an issue if you know of a block that's causing problems).
Performance is poor when running complex projects, specifically those with many clones or lots of blocks running at once.
- Some older platforms (NDS, GameCube, PSP, Original Xbox) especially struggle due to memory constraints. Try to keep projects small on these platforms.
Sounds may take time to load when playing them for the first time.

and (except for Ghost and Brightness)
- All Looks effects are supported using the opengl_core, d3d9, and gx2 renderers. See the compile flag documentation to see which platforms support these renderers.

Some platforms may not support some features. These tables describe which features support specific features.

Platform	Cloud Variables	Native Extensions	Lua Extensions
Windows	✅	❌	✅
macOS	✅	✅	✅
Linux	✅	✅	✅
3DS	✅	❌	✅
DS	❌	❌	❌
Wii U	✅	❌	✅
Wii	❌	❌	✅
GameCube	❌	❌	✅
Switch	❌	❌	✅
Vita	❌	❌	✅
PSP	❌	❌	❌
PS4	✅	❌	❌
Libretro	✅	❌	❌
Original Xbox	❌	❌	✅

Platform	Pen	Text to Speech^[1]	Makey Makey	Translate
Windows	✅	✅	✅	✅
macOS	✅	✅	✅	✅
Linux	✅	✅	✅	✅
3DS	✅	✅	✅	✅
DS	❌	❌	✅	❌
Wii U	✅	✅	✅	✅
Wii	✅	🟡	✅	❌
GameCube	✅	🟡	✅	❌
Switch	✅	🟡	✅	❌
Vita	✅	🟡	✅	❌
PSP	✅	🟡	✅	❌
PS4	✅	✅	✅	✅
Libretro	✅	✅	✅	✅
Original Xbox	✅	✅	✅	✅

[Wii, Wii U, GameCube, Switch, PS4, Original Xbox] The first controller connected will be the only one that will work.
[Wii] If you're using a PAL Wii, you must use 50Hz.
[PSP] Images cannot be over 512x512.
[3DS] If a project has a bunch of large images, some may not load.
[3DS] Some vector images will appear bigger than they should.
[NDS] Dual screen mode will not be supported.
[NDS] Only WAV audio is supported at the moment.
[Vita] Back touch will not be supported.
[Original Xbox] UI and projects might fail to load graphical assets from time to time. Rebooting your Xbox should fix this.
[Original Xbox] It is recommended to upgrade your hard drive to run at 7200 RPM, or upgrade to an SSD.
[Original Xbox] Not all projects will look correct upon launch. "Fuzzy" assets is a known quirk of the renderer, and will be addressed in future releases.
[NDS/3DS] and are unimplemented.

Text-to-Speech can use either the official Scratch servers (if the platform supports it), or DECtalk, which runs locally but is not 100% accurate. Platforms marked with a 🟡 support DECtalk only, while those with a ✅ support both. ↩︎