Hero/Heroine:
# Warrior: the strong soldier with incredible power who terrifies enemies with “Shake’em off” and “Transformation” skills;
# Assassin: the nimble killer with poisoned weapons who terrifies enemies with “Ghost Attack” and “Poison Touch” skills;
# Magian: the wise wizard who can cast the lost spells “Blizzard” to freeze enemies, and “Finger of God” to power up your defense towers.

Towers:
Gun Tower: low damage, short range, always the must;
Missile Tower: medium damage, long range, good at defeating air force;
Electric Tower: super high damage, medium range, the boss killer;
Glue Tower: low cost, slowing down an enemy, use it wisely to restrict a boss;
Ice Tower: slow down multiple enemies, medium range.
Energy Tower: increase surrounding towers' attack power;
Flame Tower: attack multiple enemies, handy weapon to handle a large wave of enemies.
Bounce Tower: bounce attack, taking out dispersed enemies with one shoot;
Laser Tower: attack enemies in a line, super long range, the coolest ultimate weapon.

Enemies:
Variant creatures, robot monsters, aliens, hi-tech battle cruisers, etc.

Ready to fight, Commander?