Build in Studio and save your world to a file. When publishing opens, those files are what you upload - so anything you make now still counts.
| Build with bricks, wedges, cylinders and spheres | Yes |
| Move, resize, rotate and paint | Yes |
| Welds, hinges, motors and springs | Yes |
| Write scripts to make things happen | Yes |
| Playtest with a character that walks, jumps and climbs | Yes |
| Terrain and water | Yes |
| Save and open worlds | Yes |
| Publish a game here | Soon |
| Play together with friends | Soon |
Games you publish are private inside by default. Sharing the build so other people can open and learn from it is a switch you flip, not the default.