jewelNOVA

It is a tower defense game that carefully protect from the monsters (jewelNOVA) jewel in the middle of the field.
You can also set up to intercept a monster defense units to grow citadel turret and tower lightning strike, kill monsters yourself directly manipulating the natural disaster lightning, atmospheric pressure decreases, meteorites, such as an earthquake.

By location of the unit there are a lot of defense, it is not even uniform strategies. How to set up a defense units around the gem is sometimes effective means, of course, prevent the progression of the opponent and create a base in every direction.

And fight off all the monsters of the stage, the stage is clear. Defense units that can be used to progress the stage increases. You can increase the level of natural disasters with the points earned after stage.

You can compete your score with players all over the world to register a ranking score for each stage also.