This is Minecraft Compact Claustrophobia in Scratch! So far, you can get up to only 8 unique items, but this is just the start. Click the green flag to start. Press E to craft and to do anything else you might need to. There's no saving right now. That will probably be implemented in a future update.
This is just a demo. The next update will probably allow you to plant trees and get wood cuttings. I didn't add different types of saplings because I didn't want to make all of the different wood types.