The Tank is a massive war unit that can absorb a lot of damage from the defensive buildings.
Cannon is one of the most effective weapons against the tough units such as Tank or Heavy Boy.
Laser Gun is a very effective weapon. Its armor, that is all around it, place this weapon among the most resistant weapons in this game at all.
The teleport will be the most significant building of our inventor in this game.
Scorpspider is a robotic spider at first levels, but transforms to scorpion after a few upgrades at later levels.