When pressing Move/Rotate, at the bottom right, three buttons pop up. For them, I need somewhere to put them, I need to make them the same style as the rest of the UI, and I need four more sets of “Position, X, Y, Z” for Global Offset Position, Global Offset Orientation, Relative Offset Position, and Relative Offset Orientation. I’m not sure how to fit this all in, make some kind of pop up, but that’d block some stuff. Need help with the idea.
Next, please test the game, and constantly press shift+F9 to check for warnings or errors, and let me know how they happened.
So far what doesn’t work:
The Color/Material entering is a little incomplete. Just type in the values for now, clicking (including the drop down) doesn’t work.
Under Joint, “Universal” and “Torsion Spring” don’t do anything. Same with “Prismatic” under Constraint.
And the N/A button doesn’t work.
Otherwise, everything should work, hopefully 
Thank you all in advance!
Edit: I also need to communicate better with the player. I’d appreciate some suggestions for that was well :D