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Tomcat An external keyboard is definitely needed. I've used a stylus instead of a mouse — tolerable.
Block Coding - high-level, block-based visual programming
https://forum.godotengine.org/t/block-coding-high-level-block-based-visual-programming/68941
In the Android Rocket-Dev Chat there was already discussion about integrating this plugin on Android.
It's unlikely that this will actually happen, as there aren't enough volunteer developers who care about Android.
It was also recently presented at GodotCon.