BetterSpore

BetterSpore is a usermade Expansion mod by BallLightning. It was released on March 13th.

Parts
50 parts which were already in the official game are added to the Creature Creator. 40 cell parts and 10 Grox parts. Originally there were 10 new custom parts coming but they were scrapped due to bugs.

Other Features
It also includes over 20 new space tools, an overhaul of the Creature and Space stages, changes to the Tribal and Civilization stage and a complete GUI (Graphics User Interface) change.

Link
Betterspore at Sporedum