Find out how to switch from the TerraTech main branch to the TT_Unstable Beta branch here:https://www.youtube.com/watch?v=r_ce_yPOflo
New Features:

• Creative and Co-op Creative modes now have the option to add Easy, Medium or Hard enemy Techs to the game.
  [list]
• Can be set before a game starts and changed via the Options screen.
  

• GeoCorp Cat Nine Mining Flail
• GeoCorp Windmill Mining Flail
• GeoCorp Active All Axis Heavy Gyro
• Hawkeye Active All Axis Horizon Gyro
  

• The Care Package near the start of the game now gives an extra solar generator, battery and regen bubble.
• The 3 variations of the Trader Troll have now been replaced with a less threatening anchored new Trader Troll Tech.
• "FTUE" respawn Techs from GSO Grade 2 onwards now include a solar generator and a few more blocks in general.
  

• Multiple undo stacking has now been removed as it was considered too confusing to the player. The revised behaviour is as follows:
  [list]
• When any operation creates an undo, it replaces any previous undo that was available.
• When a block-detach undo (as opposed to send-to-SCU) is available, if you detach a block from the Tech that the operation applies to, the undo will be invalidated (the button disappears).
• You can still do the exploit where you detach a block, replace it with a different block, then hit undo to attempt to rebuild the Tech around the replacement block - provided that you don't detach any more blocks after the initial detach.
  

• If you have a large number of snapshots (e.g. 300), the initial load of this update may take slightly longer than usual.
  [list]
• All subsequent load times should be quicker.