Shoots enemies around it. Locks on the closest target. Approx firing range (square area): 2-3 blocks in each direction.
Sucks up coins around it. Pick it up to receive collected coins. Should be placed in distance (like 2-3 blocks) from Turrets for maximum effectiveness.
Used to destroy broken-looking (formerly Purple Gemmed walls). Shoot it to detonate, turrets can do it either. Can damage you as well as your buildings. Explosion range (square area) : 2 blocks in each direction.
For Rail-droids, so they can go where you want. You can place it nearly everywhere.
Collects treasure fluid from Treasure Goblet. You can spawn them on railway beginning in your base