Colossus/Development

The colossus] used to have an ability to enhance its shields:


 * Null-Flux Generator
 * Research at: Robotics Support Bay
 * Cost: 200 200
 * This ability enhanced the defensive qualities of a colossus' shield.

Attacks
The colossus' attack used to be a sweeping beam which would destroy one unit, then sweep to another unit and destroy it, continually destroying weaker enemy units. However, the attack could only damage one unit at a time. The attack was later changed to a "spray" of beams capable of targeting five units. The attack has more recently changed to resemble the original sweeping animation, but continuing to inflict splash damage.

By June 2008, the attack animation was changed to be a sweeping beam, with the animation taking about a second to complete. Despite the new appearance, all targets continued to take damage simultaneously. The attack always strikes a linear area perpendicular to the direction the colossus is facing. This allows for a fine degree of control.

The attack was weak against buildings at BlizzCon 2008 but the damage figures were more recently altered.

The colossus' cooldown was lengthened between BlizzCon 2008 and January 2009, but its damage was also increased.

The beams could not be stopped by a mothership's Time Bomb ability.