I wanted to compare the skill of working with the structures (buildings, traps, gems) in GemCraft to the skill of working with the structures in Vector TD 1 and 2.
GemCraft seems to have some similar attacks to Vector; 1. The lime gem chain attack is similar to the green vector towers. The green gem is nearly as functional as the first green vector tower. 2. The red gem is similar to the first red vector tower. 3. Blue and cyan gems do similar to the blue vector towers. 4. The yellow gem is similar to the final red vector tower.
Vector TD has always had my heart with the combo of tower types plus the color features. GemCraft implements a dynamic mana system, shielding, and of course the gems themselves.
they aren't so similar as you say in almost every TD games there are the blue(slowing tower), the red(splash tower) and the green (rate tower) I think you are mot right They are different SAME CLASS games