ALPHA 16 Pre-Release 3 is now available. In this Pre-Release Build we've added some significant features including reinforcements, a new integrity system and the return of collision sounds!
This is a pre-release build so all the usual things apply, it will have problems (some of which we know about) and it may break your universe.
If you still wish to give it a try check out all the changes and details here : https://steamcommunity.com/app/416240/discussions/14/3374780959388663359/ and how to access it here: https://steamcommunity.com/app/416240/discussions/14/1735468061766868200/